The DSP PC-Tool by Audiotec Fischer is the professional software suite for configuring, analyzing, and fine-tuning car audio systems with our ACO-based DSPs. With a comprehensive set of sound processing features and an efficient workflow, it enables precise tuning even for complex setups. Currently supporting around 30 DSP models from BRAX, HELIX, and MATCH — and ready for future releases — the software continues to evolve in depth and capability, all free of charge.
Version 6 introduces a redesigned interface that mirrors the logical structure of the audio signal path. Processing stages – from Input and Source Management to Virtual Channel and Output Processing – are now clearly aligned with the signal flow. This organization enhances usability and offers a transparent, intuitive foundation for accurate sound tuning. The integrated Real-Time Analyzer (RTA) remains a vital tool throughout, delivering live acoustic measurements for vehicle-specific optimization.
| Ready for the next generation? DSP PC-Tool 6 is coming soon – take the opportunity to get familiar with Version 5 now. | Download it here! |
The DSP PC-Tool by Audiotec Fischer is the professional software suite for configuring, analyzing, and fine-tuning car audio systems with our ACO-based DSPs. With a comprehensive set of sound processing features and an efficient workflow, it enables precise tuning even for complex setups. Currently supporting around 30 DSP models from BRAX, HELIX, and MATCH — and ready for future releases — the software continues to evolve in depth and capability, all free of charge.
Version 6 introduces a redesigned interface that mirrors the logical structure of the audio signal path. Processing stages – from Input and Source Management to Virtual Channel and Output Processing – are now clearly aligned with the signal flow. This organization enhances usability and offers a transparent, intuitive foundation for accurate sound tuning. The integrated Real-Time Analyzer (RTA) remains a vital tool throughout, delivering live acoustic measurements for vehicle-specific optimization.
| Ready for the next generation? |
| Download here! |
Input Processing
The input processing stage in Audiotec Fischer’s DSP PC-Tool is designed to precisely adjust and optimize the incoming signal before it’s processed further. It ensures that any acoustic inconsistencies in the source signal are corrected, enabling the best possible audio quality – regardless of the source or specific OEM system characteristics. This stage includes essential tools such as the (Advanced) Input Signal Analyzer, Input EQ, Input Time Alignment and Dynamic Loudness Control.
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| The Input Signal Analyzer (ISA) provides an accurate analysis of the incoming source. This tool measures the frequency response of the input signal and identifies unwanted filtering such as equalization, high- and lowpass filters and allpass filters caused by OEM systems. By using an external sound interface (like the AMI – Audio Measurement Interface), the AISA provides even more precise and faster analysis, which is critical for detailed optimization in complex audio setups. This ensures that the signal is linearized and both timeand phase-optimized before entering the subsequent processing stages. |
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| The Input EQ corrects and refines the incoming signal by compensating for pre-set equalization and filters applied by many OEM systems. This ensures a neutral and linear frequency response, creating a consistent audio foundation for optimal sound quality in subsequent processing stages. Beyond equalization, time and phase correction are crucial for accurate sound reproduction. Factory systems often introduce delays and phase shifts, affecting coherence and stereo imaging. By realigning time and phase at the input stage, the DSP ensures optimal signal compatibility for further processing and seamless integration of multiple sources. |
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| The DLC (Dynamic Loudness Control) counteracts the dynamic loudness of an OEM radio or even creates one itself if desired, ensuring an intact sound balance at all times. For example, at lower volume settings on the source unit, DLC increases low frequencies to compensate for the ear’s reduced bass sensitivity – preserving a full and balanced sound. The result is a fuller, more enjoyable listening experience, regardless of the listening volume. |
Source Management
The smart Source Management within the DSP PC-Tool provides seamless handling and routing of multiple audio sources, including Bluetooth®, High-Resolution USB-Audio, analog and digital inputs. Thanks to its intuitive drag-and-drop interface, sources can be easily assigned to the desired output channels. For OEM system integration, the DSP features advanced input summing capabilities, allowing it to accurately combine signals from multiple factory speaker outputs. Many OEM systems split the frequency spectrum across different channels (e.g., separate outputs for midrange and tweeters). The DSP reconstructs a full-range signal before further processing, ensuring an optimal foundation for high-quality sound tuning. Beyond manual selection, the system can dynamically and automatically switch between sources, prioritizing available signals based on predefined settings. This ensures a seamless listening experience, whether switching from a digital input to a Bluetooth® stream or adapting to changing playback conditions. This smart system enables the DSP to manage, adapt, and optimize a wide range of input sources, always delivering the ideal audio experience tailored to the listener’s preferences.
Input Processing
The input processing stage in Audiotec Fischer’s DSP PC-Tool is designed to precisely adjust and optimize the incoming signal before it’s processed further. It ensures that any acoustic inconsistencies in the source signal are corrected, enabling the best possible audio quality – regardless of the source or specific OEM system characteristics. This stage includes essential tools such as the (Advanced) Input Signal Analyzer, Input EQ, Input Time Alignment and Dynamic Loudness Control.
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| The Input Signal Analyzer (ISA) provides an accurate analysis of the incoming source. This tool measures the frequency response of the input signal and identifies unwanted filtering such as equalization, high- and lowpass filters and allpass filters caused by OEM systems. By using an external sound interface (like the AMI – Audio Measurement Interface), the AISA provides even more precise and faster analysis, which is critical for detailed optimization in complex audio setups. This ensures that the signal is linearized and both timeand phase-optimized before entering the subsequent processing stages. |
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| The Input EQ corrects and refines the incoming signal by compensating for pre-set equalization and filters applied by many OEM systems. This ensures a neutral and linear frequency response, creating a consistent audio foundation for optimal sound quality in subsequent processing stages. Beyond equalization, time and phase correction are crucial for accurate sound reproduction. Factory systems often introduce delays and phase shifts, affecting coherence and stereo imaging. By realigning time and phase at the input stage, the DSP ensures optimal signal compatibility for further processing and seamless integration of multiple sources. |
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| The DLC (Dynamic Loudness Control) counteracts the dynamic loudness of an OEM radio or even creates one itself if desired, ensuring an intact sound balance at all times. For example, at lower volume settings on the source unit, DLC increases low frequencies to compensate for the ear’s reduced bass sensitivity – preserving a full and balanced sound. The result is a fuller, more enjoyable listening experience, regardless of the listening volume. |
Source Management
The smart Source Management within the DSP PC-Tool provides seamless handling and routing of multiple audio sources, including Bluetooth®, High-Resolution USB-Audio, analog and digital inputs. Thanks to its intuitive drag-and-drop interface, sources can be easily assigned to the desired output channels. For OEM system integration, the DSP features advanced input summing capabilities, allowing it to accurately combine signals from multiple factory speaker outputs. Many OEM systems split the frequency spectrum across different channels (e.g., separate outputs for midrange and tweeters). The DSP reconstructs a full-range signal before further processing, ensuring an optimal foundation for high-quality sound tuning. Beyond manual selection, the system can dynamically and automatically switch between sources, prioritizing available signals based on predefined settings. This ensures a seamless listening experience, whether switching from a digital input to a Bluetooth® stream or adapting to changing playback conditions. This smart system enables the DSP to manage, adapt, and optimize a wide range of input sources, always delivering the ideal audio experience tailored to the listener’s preferences.
Virtual Channel Processing
Maximum Flexibility for Premium Sound Systems
Virtual Channel Processing (VCP) provides unprecedented flexibility in managing complex system configurations. By introducing a virtual layer between the input and output stages, it allows signals to be freely routed and processed across multiple channels. This is particularly beneficial for sophisticated sound concepts where input signals are split into multi-way systems, requiring unconventional routing. Additionally, multiple output channels can be assigned a pre-configured VCP channel, featuring an independent 30-band equalizer, time alignment, phase adjustment, and level control. For example, this structure allows for the creation of a virtual front channel in an active 3-way front system, making it possible to apply global adjustments across all related output channels without altering their individual settings. As a result, the front stage remains phase-neutral and consistently tuned. Such advanced functionality plays a crucial role in the precise configuration of high-end multi-way systems, ensuring an optimized sound experience at the highest level.
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Group Equalizers: Implement cross-channel equalizers that affect multiple output channels simultaneously, ensuring consistent tonal balance across complex speaker configurations |
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Time Alignment: Enables collective delay adjustments for grouped channels, preserving their internal timing while optimizing spatial placement |
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Bass FX Menus: Provide proprietary bass processing technologies, including features like Augmented Bass Processing, enhancing low-frequency performance |
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Center FX Menus: Allow assignment of proprietary center processing, such as RealCenter, for perfect acoustic integration of a center speaker into stereo sound systems |
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Remote Control Management: Link functions like subwoofer level and rear attenuation to VCP channels for unified volume control across multiple output channels |
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Rear Attenuation: Enables targeted volume reduction for linked output channels, allowing for precise control over rear speaker levels |
Virtual Channel Processing
Maximum Flexibility for Premium Sound Systems
Virtual Channel Processing (VCP) provides unprecedented flexibility in managing complex system configurations. By introducing a virtual layer between the input and output stages, it allows signals to be freely routed and processed across multiple channels. This is particularly beneficial for sophisticated sound concepts where input signals are split into multi-way systems, requiring unconventional routing. Additionally, multiple output channels can be assigned a pre-configured VCP channel, featuring an independent 30-band equalizer, time alignment, phase adjustment, and level control. For example, this structure allows for the creation of a virtual front channel in an active 3-way front system, making it possible to apply global adjustments across all related output channels without altering their individual settings. As a result, the front stage remains phase-neutral and consistently tuned. Such advanced functionality plays a crucial role in the precise configuration of high-end multi-way systems, ensuring an optimized sound experience at the highest level.
| Group Equalizers: Implement cross-channel equalizers that affect multiple output channels simultaneously, ensuring consistent tonal balance across complex speaker configurations |
| Time Alignment: Enables collective delay adjustments for grouped channels, preserving their internal timing while optimizing spatial placement |
| Bass FX Menus: Provide proprietary bass processing technologies, including features like Augmented Bass Processing, enhancing low-frequency performance |
| Center FX Menus: Allow assignment of proprietary center processing, such as RealCenter, for perfect acoustic integration of a center speaker into stereo sound systems |
| Remote Control Management: Link functions like subwoofer level and rear attenuation to VCP channels for unified volume control across multiple output channels |
| Rear Attenuation: Enables targeted volume reduction for linked output channels, allowing for precise control over rear speaker levels |
Output Processing
The output processing stage is where all the processed signals are fine-tuned before being distributed to the output channels and sent to the speakers. In particular, the following aspects are crucial and must be individually adjusted based on the vehicle acoustics and personal preferences to ensure a high-quality audio experience.
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| The EQ is used to fine-tune the frequency response of each speaker by compensating for acoustic influences caused by the vehicle interior and speaker placement. Reflections, absorption, and structural resonance can lead to tonal irregularities – the EQ corrects these to achieve a balanced and natural sound image. Highpass and lowpass filters define the usable frequency range of each speaker. By filtering out frequencies that a speaker cannot reproduce efficiently, these filters ensure clean signal separation between tweeters, midrange drivers, and woofers – reducing distortion and improving overall system efficiency. |
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| Time alignment delays the signals from individual speakers based on their distance to the listener, ensuring the sound to arrive simultaneously at the listening position. Automatic Time Measurement (ATM) automates this process by measuring the distances between the speakers and listening position with a microphone and sets the delays precisely. The setup is simple and fast, especially as no additional measurement loop is required, making the process safer and easy to use. Even with factory-fitted head units without an aux input, the ATM enables process-safe and reliable measurement without an additional measurement setup. This saves valuable installation time and guarantees exact results for optimum sound tuning. |
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| Phase settings ensure that all speakers operate in sync. Incorrect phase settings can lead to sound cancellations so they must be properly adjusted for a clear and balanced sound. |
Real-Time Analyzer
Visualizing and perfecting sound
Mit dem Real-Time Analyzer (RTA) bietet das DSP PC-Tool das essenzielle Werkzeug für präzises Klangtuning. Mit Hilfe eines Messmikrofons wird durch ihn in Echtzeit der Frequenzverlauf des Soundsystems gemessen und zudem akustische Daten visualisiert, sodass klangliche Unregelmäßigkeiten exakt identifiziert und korrigiert werden können. Der RTA ist dabei weit mehr als nur ein Messinstrument – durch seine nahtlose Integration in den DSP-Workflow unterstützt er sowohl die manuelle Feinjustierung als auch automatisierte Anpassungsprozesse. Als akustische Referenz trägt er wesentlich zur kontrollierten Optimierung wie auch zur Nutzung fortschrittlicher DSP-Funktionen bei.
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Precision and Speed: The RTA provides real-time frequency analysis, offering both quick setup and detailed measurement capabilities. |
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Automatic Adjustment Capabilities: More than just a measurement tool, the RTA actively supports real-time EQ tuning in combination with our proprietary TuneEQ algorithm |
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Customizable Reference Curves: Users can apply predefined target curves or create custom ones to fine-tune the system according to their personal preferences |
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Smoothing and Resolution: Adjustable smoothing and measurement resolution enhance accuracy |
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Seamless Integration within the DSP PC-Tool: The RTA is fully embedded into the DSP PC-Tool and directly linked to all DSP settings |
Output Processing
The output processing stage is where all the processed signals are fine-tuned before being distributed to the output channels and sent to the speakers. In particular, the following aspects are crucial and must be individually adjusted based on the vehicle acoustics and personal preferences to ensure a high-quality audio experience.
|
| The EQ is used to fine-tune the frequency response of each speaker by compensating for acoustic influences caused by the vehicle interior and speaker placement. Reflections, absorption, and structural resonance can lead to tonal irregularities – the EQ corrects these to achieve a balanced and natural sound image. Highpass and lowpass filters define the usable frequency range of each speaker. By filtering out frequencies that a speaker cannot reproduce efficiently, these filters ensure clean signal separation between tweeters, midrange drivers, and woofers – reducing distortion and improving overall system efficiency. |
|
| Time alignment delays the signals from individual speakers based on their distance to the listener, ensuring the sound to arrive simultaneously at the listening position. Automatic Time Measurement (ATM) automates this process by measuring the distances between the speakers and listening position with a microphone and sets the delays precisely. The setup is simple and fast, especially as no additional measurement loop is required, making the process safer and easy to use. Even with factory-fitted head units without an aux input, the ATM enables process-safe and reliable measurement without an additional measurement setup. This saves valuable installation time and guarantees exact results for optimum sound tuning. |
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| Phase settings ensure that all speakers operate in sync. Incorrect phase settings can lead to sound cancellations so they must be properly adjusted for a clear and balanced sound. |
Real-Time Analyzer
Visualizing and perfecting sound
Mit dem Real-Time Analyzer (RTA) bietet das DSP PC-Tool das essenzielle Werkzeug für präzises Klangtuning. Mit Hilfe eines Messmikrofons wird durch ihn in Echtzeit der Frequenzverlauf des Soundsystems gemessen und zudem akustische Daten visualisiert, sodass klangliche Unregelmäßigkeiten exakt identifiziert und korrigiert werden können. Der RTA ist dabei weit mehr als nur ein Messinstrument – durch seine nahtlose Integration in den DSP-Workflow unterstützt er sowohl die manuelle Feinjustierung als auch automatisierte Anpassungsprozesse. Als akustische Referenz trägt er wesentlich zur kontrollierten Optimierung wie auch zur Nutzung fortschrittlicher DSP-Funktionen bei.
| Precision and Speed: The RTA provides real-time frequency analysis, offering both quick setup and detailed measurement capabilities. |
| Automatic Adjustment Capabilities: More than just a measurement tool, the RTA actively supports real-time EQ tuning in combination with our proprietary TuneEQ algorithm |
| Customizable Reference Curves: Users can apply predefined target curves or create custom ones to fine-tune the system according to their personal preferences |
| Smoothing and Resolution: Adjustable smoothing and measurement resolution enhance accuracy |
| Seamless Integration within the DSP PC-Tool: The RTA is fully embedded into the DSP PC-Tool and directly linked to all DSP settings |
TuneEQ
Building on the data provided by the Real-Time Analyzer (RTA), TuneEQ takes the process a step further by automating the finetuning of the equalizer. Using real-time frequency measurements, TuneEQ analyzes the audio signal and automatically adjusts each EQ band to match a desired reference curve for optimal sonic balance. This intelligent collaboration between RTA and TuneEQ allows for an efficient and highly accurate tuning process that saves time while providing superior accuracy. The parametric filters used by TuneEQ allow for granular control over the frequency spectrum, producing results that are far more precise than manual adjustments. Whether you’re using a predefined reference curve or creating your own, TuneEQ ensures that the system quickly aligns with your target sound profile.
Automatic Time Measurement
Achieving perfect time alignment in a car audio system is essential for a well-defined soundstage and accurate imaging. Traditionally, this requires manual distance measurements or trial-and-error adjustments by ear – both time-consuming and prone to error. Even the classic “tape measure” method often needs finetuning and doesn’t account for acoustic influences or built-in delays in factory systems. This is where Audiotec Fischer’s proprietary ATM comes into play. With a single acoustic measurement, ATM automatically calculates the correct delay values for each output channel based on their actual arrival times. The system even detects and compensates for factory-set time corrections in OEM setups – a key advantage when signals are routed through existing audio architectures. ATM is fully integrated into the DSP PC-Tool and works with all compatible DSP devices. It not only speeds up the setup process, but also ensures unmatched precision for the most demanding configurations.
TuneEQ
Building on the data provided by the Real-Time Analyzer (RTA), TuneEQ takes the process a step further by automating the finetuning of the equalizer. Using real-time frequency measurements, TuneEQ analyzes the audio signal and automatically adjusts each EQ band to match a desired reference curve for optimal sonic balance. This intelligent collaboration between RTA and TuneEQ allows for an efficient and highly accurate tuning process that saves time while providing superior accuracy. The parametric filters used by TuneEQ allow for granular control over the frequency spectrum, producing results that are far more precise than manual adjustments. Whether you’re using a predefined reference curve or creating your own, TuneEQ ensures that the system quickly aligns with your target sound profile.
Automatic Time Measurement
Achieving perfect time alignment in a car audio system is essential for a well-defined soundstage and accurate imaging. Traditionally, this requires manual distance measurements or trial-and-error adjustments by ear – both time-consuming and prone to error. Even the classic “tape measure” method often needs finetuning and doesn’t account for acoustic influences or built-in delays in factory systems. This is where Audiotec Fischer’s proprietary ATM comes into play. With a single acoustic measurement, ATM automatically calculates the correct delay values for each output channel based on their actual arrival times. The system even detects and compensates for factory-set time corrections in OEM setups – a key advantage when signals are routed through existing audio architectures. ATM is fully integrated into the DSP PC-Tool and works with all compatible DSP devices. It not only speeds up the setup process, but also ensures unmatched precision for the most demanding configurations.
