Challenges for designers of digital-camera audio subsystems

摘要

From a system designer's point of view, digital-video cameras combine the worst of the portable consumer and home-entertainment worlds. There are rigid constraints on space, power consumption, and component cost. But end users still expect their recordings to look and sound well when played back on stationary equipment in which recording flaws are much more visible—and audible. High-quality microphone recording is therefore indispensable. Acoustic- and mechanical-noise issues associated with handheld use in outdoor environments, as well as electrical interference from switching power supplies, motors, and digital circuitry within a camera, make it all the more difficult to achieve good sound quality.