Acoustics ML & DSP Engineer: Clear Voice & Calls

Apple, Inc.; Boulder (CO); On-site; USD 135,000 - 250,000; Full time

Job summary

Apple is seeking an Acoustics ML and DSP Engineer in Boulder, Colorado to develop, tune and ship ML and DSP algorithms for voice processing across Apple devices. You will move algorithms from prototype through on-device testing to production, improving voice quality and intelligibility in telephony and calls under real-world conditions.

You will work with data pipelines, tuning, DSP and audio ML colleagues across hardware and software orgs, and stay current with state-of-the-art speech

Qualifications

• MS with 3+ years of relevant experience, or PhD, in Acoustics, Audio, Electrical Engineering, Computer Science or a related field.
• Solid grasp of acoustics and signal processing fundamentals.
• Experience shipping audio or speech enhancement ML algorithms from prototype to production.
• Proficiency with PyTorch and Python, including version control, testing and reproducible experiments.
• Working knowledge of Max/MSP for real-time audio prototyping.
• Experience with causal, streaming models under real-time latency and compute constraints.
• Experience using, and where needed building, large-scale data and cloud training pipelines, including preprocessing and data simulation.
• Working knowledge of speech quality evaluation: objective metrics, telephony quality and echo performance measures, and subjective listening tests.
• Understanding of the state of the art in speech processing and adjacent fields.
• Enthusiasm for exploring and testing new ideas, with the ability to prioritize and deliver across several projects in parallel in a fast-paced environment.
• Team player with strong written and verbal communication, and the ability to work in cross-functional teams.
• Experience with audio DSP, such as echo and double-talk handling, microphone array processing, beam-forming, dynamics processing, EQ and noise suppression.
• Experience with hybrid systems that combine classical signal processing and machine learning.
• Familiarity with telephony voice quality requirements.
• Knowledge of front-end processing for speech recognition and machine listening.
• Experience with multi-modal machine learning.
• Strong coding and debugging skills (Python and C/C++), plus MATLAB for analysis.
• Knowledge of transducers and their acoustic integration.
• Curious and eager to try new ideas quickly, while keeping multiple product programs on track.

Skills

PyTorch

Python

C/C++

MATLAB

Education

MS with 3+ years experience or PhD in Acoustics/Audio/Electrical Eng/CS

Tools

Max/MSP

Large-scale data and cloud training pipelines

Job description

Apple is seeking an Acoustics ML and DSP Engineer in Boulder, Colorado to develop, tune and ship ML and DSP algorithms for voice processing across Apple devices. You will move algorithms from prototype through on-device testing to production, improving voice quality and intelligibility in telephony and calls under real-world conditions.

You will work with data pipelines, tuning, DSP and audio ML colleagues across hardware and software orgs, and stay current with state-of-the-art speech