Apple"s Hardware group is home to some of the world"s most advanced technologies - powering the experiences that define Apple products.
We are looking for a highly skilled Senior Audio — Voice Processing \u0026 Environmental Test Engineer to join our team in Herzliya.
Test and validate the performance and tuning of core voice processing blocks\\nExecute validation under diverse acoustic conditions, speaker configurations, and signal scenarios\\nCollaborate with algorithm teams to provide data-driven feedback for tuning and optimization\\nConduct objective voice quality assessments using standardized metrics, including POLQA (ITU-T P.863) and PESQ (ITU-T P.862)\\nOrganize and manage subjective \\"golden ear\\" listening panels to assess voice naturalness, intelligibility, and overall quality\\nDefine evaluation criteria and scoring methodologies aligned with industry standards and internal quality benchmarks\\nDesign and execute WER-based testing for scenarios involving voice transcription and speech recognition\\nCorrelate WER results with upstream audio processing quality to identify degradation sources\\nConduct testing in specialized laboratories that replicate real-world acoustic scenarios,"including": Moving vehicles ,Noisy public environments — cafés, restaurants, crowded spacesWindy outdoor settings and Combined environmental stressors\\nMeasure and track Time to First Word (TTFW) and round-trip audio latency\\nEstablish performance baselines and monitoring frameworks for continuous tracking across firmware and software iterations\\nDesign and maintain automated test suites to detect audio artifacts — including glitches, pops, clicks, distortions, and dropouts\\nBuild regression frameworks that validate audio quality across new firmware and software updates
BSc in Electrical Engineering, Computer Engineering, Acoustics, Audio Engineering, or a related field\\n7+ years of experience in audio testing, voice quality evaluation, or acoustic system validation\\nProven experience working within or alongside professional audio/acoustic test laboratories\\nDemonstrated ability to design repeatable, controlled test environments and methodologies\\nExperience with both objective measurement tools and subjective listening evaluation protocols\\nStrong system-level understanding with the ability to isolate quality issues to specific processing stages\\nDeep understanding of audio signal processing fundamentals — frequency domain analysis, filtering, spectral characteristics, and time-domain behavior\\nHands-on experience with voice quality measurement tools and standards (POLQA, PESQ, 3QUEST, ETSI standards)\\nFamiliarity with HEAD acoustic test equipment — measurement microphones, artificial heads (HATS), mouth simulators, and anechoic/semi-anechoic chamber setups\\nStrong proficiency in Python for test automation, data analysis, audio signal processing, and framework development\\nExperience with audio acquisition systems, DACs/ADCs, and real-time audio streaming architectures\\nUnderstanding of latency measurement methodologies in real-time audio systems
MSc in Acoustics, Audio Signal Processing, Electrical Engineering, or a related discipline — considered a significant advantage\\nExperience with speech recognition systems and WER evaluation methodologies\\nBackground in psychoacoustics or subjective audio evaluation research\\nExperience with environmental simulation lab design and commissioning\\nKnowledge of ITU-T P-series recommendations and ETSI test specifications
