Audio DSP CODECs target voice-centric applications
1 min read
Two audio DSP CODECs, the DA7322 and DA7323, have been released by Dialog Semiconductor, targeting applications with up to four analogue or digital microphones respectively.
The devices have been specifically developed for voice-centric applications found in the latest generation of tablets, wearable technology, webcam accessories and in-vehicle entertainment.
The new audio CODECs incorporate an integrated 24-bit DSP with an advanced voice engine package that provides an improvement of over 35db signal-to-noise ratio through the use of multi-channel beamforming, noise suppression and acoustic echo cancellation features. The result is an enhancement in speech performance with improved sound quality for VoIP and voice recognition applications, which is particularly important for end users in a noisy environment.
The embedded DSP engine includes a suite of audio enhancement SmartEffects ranging from multi-band equalisation to stereo widening. It also contains a psychoacoustic bass boost that can be enabled to improve perceived low frequency response for playback on low cost speakers, while dynamic range control and volume levelling offers more perceived loudness and consistent audio levels.
