DSP audio chips from Dialog optimised for voice control

The two new DSP and CODEC integrated audio processor chips DA7322 and DA7323 from Dialog Semiconductor are designed for applications with voice/speech control in smart phone and tablets where multiple number of microphones are used. Voice control is increasingly used in the recent smart phones, tablets computers, automotive infotainment systems and also in smart watches and other wearable devices. The accuracy of voice control is highly dependent on front-end voice processing, where multiple microphones and 24 bit codecs integrated with DSP are used. Higher signal-to-noise ratio is important factor. DA7322 and DA7323 is packed with complete voice engine with 35dB signal-to-noise ratio (SNR). These devices support using up to four microphones for multi-channel beamforming, noise suppression and acoustic echo cancellation. DA7322 and DA7323 voice engines not only provide reliable voice control but also quality speech for telephonic conversation. “There is an increasing need to improve the audio quality of voice calls,” said Udo Kratz, Senior Vice President and General Manager, Business Group Mobile Systems at Dialog. “Independent of the ambient noise conditions the consumer is experiencing, both audio CODECs deliver a superior audio experience by significantly reducing unwanted noise while maintaining voice quality during VOIP calls on applications such as Skype o...