Overview

Significant advances in automatic speech recognition (ASR) have led to an abundance of devices and applications that use speech as their main user interface. Microphones are no longer regarded as mere voice input devices for phone calls but rather as acoustic sensors for human-machine interaction and for acoustic sensing of the environment. We have come to expect high-quality ASR as well as other audio-related functionalities, such as crystal-clear voice calls and immersive high-definition audio, from our devices.

As Artificial Intelligence brings us closer to creating human-like machines, we must develop similar audio-processing abilities to the ones we have as human beings.
Application specific sound DSPs and specialized software packages are the only viable way to accomplish this.

  • Voice activation and speech recognition will become key in almost every device.
  • Sound-sensing enables machines to interpret and act upon recognizable sounds.
  • Voice communication must be clear and high quality even in noisy surroundings.
  • Audio processing allows the delivery of truly immersive sound.

The ability to capture, process, and reproduce audio signals is fundamental to mobile devices, headsets, wireless speakers, smart home devices, automotive infotainment systems, and voice enabled IoT. To enable these devices a scalable audio DSP is required.
Today’s smartphones, wearables, and smart home devices require ultra-low-power, high-performance processing for speech recognition and reproduction, “always-on” functionality, and advanced multi-microphone voice capabilities. Because they employ multi-microphone setups for far-field voice pickup, smart speakers and other smart battery-operated devices must be optimized for the best combination of performance and power consumption. Finally, high-end audio for home entertainment and automotive infotainment systems demand the best possible hi-fi audio output.

The key to meeting these requirements lies in embedding dedicated audio DSP chips. The use of flexible sound DSP IP architectures and optimized software packages for it, provides the following:

  • Small die size, high code density, and high processing capability
  • Enable SoC designers to select the optimal implementation in terms of silicon area, power consumption, and operating frequency
  • Internal and ecosystem based software modules that are available off-the-shelf, and development platforms to speed application development and prototyping

 

  Audio

  Codecs

  Voice

  Codecs

  Dolby

  HD-Audio

  DTS

  HD-Audio

MP3

MP3Pro

Ogg Vorbis

FLAC

AAC LC

HE AAC V1

HE AAC V2

HE-AAC V2 5.1

MPEG4 BSAC

WMA

SBC

CELT

DRA

EVS

AMR-WB

AMR-NB

HR

FR

EFR

EVRC

QCELP

SILK

OPUS

iLBC

mSBC

AMBE

G.7xx

Dolby Atmos

Dolby AC4

Dolby TrueHD

Dolby Digital Plus

Dolby Digital decoder       (AC3)

Dolby Digital encoder   (DDCE)

Dolby MS10

Dolby MS11

Dolby Volume

Master Audio

High Resolution

Low Bit Rate

Extended Surround   (ES)

DTS 96/24

DTS Digital Surround

DTS Transcoder

DTS M6

DTS M8

 

Check out the related product links below to find the perfect audio DSP IP solution for your needs.

target markets

Mobile Voice

Reproducing a clean and noise-free voice signal involves using complex codecs such as EVS, as well as advanced noise-reduction techniques.

HMI

Human Machine Interface includes voice activation and speaker authentication. It often requires ultra-low-power and "always-on" solutions, using far-field voice pickup, beamforming, and acoustic echo cancellation, for improved speech recognition performance.

Mobile Audio

Efficient, "on the move" audio processing is critical, not only for smartphones, tablets, and wearables but also for wired headphones and wireless headsets.

Smart Home

As devices for the home get smarter by the day, smart speakers, security cameras, thermostats, smoke alarms, and many other home appliances introduce far-field voice control, high-definition voice communication, and high-quality audio.

Consumer Audio

Digital TVs, set-top boxes, wireless speakers, game consoles, and other consumer entertainment systems are expected to deliver immersive audio at ever lower price points.

Automotive

Automotive infotainment systems integrate voice processing and speech recognition alongside high-end audio output in a challenging environment with a high noise floor.

CEVA's audio/voice/sensing DSP is at the foundation of our DBMD4 Always On Voice processor, delivering the desired power and processing efficiency to drive the industry's lowest power 'always-on' solution.
Ofer Elyakim, CEO of DSP Group