Audio Product Development Engineer - DSP

## Audio Product Development Engineer - DSPApply: Xiamen, GNAC: Ballerup: Full time: Posted 30+ Days Ago: R28555Ensure high quality audio performance in GN headsets by porting, integrating, and validating audio DSP algorithms from reference platforms to specific target platforms (chipsets/OS/SDKs), securing robust, real time operation in mass produced products. Furthermore, troubleshooting complex audio DSP and platform-related issues, feeding insights back into the product development cycle.**Key Responsibilities*** **Algorithm porting, integration, and optimization to the target platforms.** + Port existing audio DSP algorithms (e.g., Noise reduction, Beamforming, AEC, EQ, ANC) from reference implementations to the specific target platforms. + Embed the ported algorithm into the existing FW stack of the target platform, including defined interfaces, data flow, and control mechanism for seamless operation of headset’s overall system. + Adapt and optimize code to target SDKs, toolchains, and audio frameworks while maintaining algorithm behavior and performance. - Handle fixed‐point and floating‐point implementations, data formats, and platform‐specific constraints.* **Integrate DSP/HW modules of target platforms into overall audio signal chain** + Understand the flow of audio data from transducers through various DSP blocks and out to the speakers and transmission channels. + Work with the platform’s specific hardware abstraction layer or audio peripherals (ADCs, DACs, I2S/PCM interfaces, transducers).* **Validation and verification of the ported algorithms and integrated modules.** + Develop and execute comprehensive test plans to verify the functionality and performance of individual DSP blocks and the complete audio signal chain. + Regression test - ensure new changes or optimizations do not compromise the existing functionality.* **Debugging & problem solving** + Perform low level debugging using debuggers, emulators, and specialized tools to diagnose issues within the DSP firmware, hardware registers, memory, and real time execution flow. + Identify root causes of audio anomalies or unexpected behaviors that might be caused by DSP algorithms, hardware interactions, OS scheduling, or interference. + Analyze field logs, audio recordings, and reported symptoms, then potentially developed specific diagnostic tools or FW builds for field testing. At the end, provide timely resolution and implement robust fixes.* **Audio system calibration and measurement tool development** + Develop and implement FW or SW routines for factory calibration of transducers and other audio components to compensate unit-to-unit variation. + Create internal tools or scripts for automated testing, debugging, and performance evaluation during development and manufacturing.* **Documentation & maintenance** + Document implementation detail, integration interfaces, configuration parameters, and test procedures. + Ensure well-commented code, modular, and adherence to GN coding standards for future maintenance and scalability.* **Cross‐Functional Collaboration** + Work closely with Algorithm/DSP researchers, FW/SW engineers, and Acoustic Engineers to ensure the ported implementation matches the intended algorithm design and audio targets. + Engage with vendors for technical support, SDK updates, bug reporting and leverage platform-specific optimizations.**Required Qualifications*** Bachelor’s or master’s degree in Electrical Engineering, Signal Processing, Computer Science, or related technical fields.* Solid knowledge of core audio DSP concepts (equalization, FFT, adaptive filters, gain control, etc.).* Experienced with MATLAB or Python for signal analysis, verification, and test automation.* Proficient in C/C++ development for embedded systems.* Familiar in fixed point and floating-point DSP implementation with and understanding of performance, memory, and power optimization techniques.* Understanding of hardware-software integration and interaction with audio peripherals (ADCs, DACs, I2S/PCM interface).* Experienced with version control (Git) and modern software development workflows.**Preferred Qualifications*** Hands‐on experience with various DSP architectures (e.g., ARM, Tensilica, etc.) and their associated toolchains.* Experienced with: + Multi‐mic processing, AEC, noise reduction, or ANC implementations. + Automated test frameworks and continuous integration for embedded/DSP projects.* Have background in communication headsets, earbuds, speakerphones, or similar audio products.**Key Competencies*** Ability to perform system level diagnostics and root cause analysis.* Structured & systematic approach in testing, troubleshooting, data analysis, and documenting work.* Strong implementation‐ and detail‐oriented mindset with focus on robustness and reproducibility.* Ability to collaborate effectively with cross‐functional, international teams.* Good verbal and written communication skills in English.

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