News


New wideband speech coding standard - wireless and wireline speech quality set to improve

27 February 2002 News

The ITU has approved a new standard for high-quality digital wideband speech encoding that is set to bring significant improvements in terms of interoperability, easier implementation, and improved quality for wideband voice applications and services across a wide range of communication systems and platforms.

Several important applications are envisaged for the standard. These include: Voice over IP (VoIP) and the Internet, third-generation mobile communications, PSTN high-quality audio-conferencing and business applications (both in point-to-point and multipoint situations), streaming audio and speech, ISDN wideband telephony, and ISDN video telephony and video-conferencing.

The standard - known as Recommendation G.722.2 - is also referred to as the adaptive multirate wideband (AMR-WB) codec. It has been selected by 3GPP (third- generation partnership project) as the wideband codec for GSM and third-generation wireless W-CDMA applications. The ITU says this marks the first time that both wireless and wireline services may be able to adopt the same codec.

Wideband speech coding, using an audio band of 50-7000 Hz, offers major subjective improvements in speech quality compared to traditional narrowband telephone speech (200-3400 Hz). A bandwidth of 50 to 7000 Hz improves the intelligibility and naturalness of speech, adds a feeling of transparent communication and eases speaker recognition. The low-frequency enhancement from 50 to 200 Hz contributes to increased naturalness, presence and comfort while the high-frequency extension from 3400 to 7000 Hz provides improved intelligibility.

Rosario Drogo de Iacovo, chairman of the subcommittee responsible for the work adds, "experts from around the world have collaborated in the definition, selection and testing of this new codec. It is truly state-of-the-art". Simao Campos-Neto, chairman of ITU-T Working Party 3/16 (Media Coding) notes, "The adoption of the same algorithm by both standards organisations is the result of a closely coordinated effort. We are proud to offer a single standardised solution that can be used across several industries".

For further information contact Mike Buckley, ITU-T Study Group 16, [email protected]





Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Mouser stocks wide product selection from Renesas companies
TRX Electronics News
The products on offer include embedded solutions, semiconductors, optoelectronics, sensors and passive components.

Read more...
TUKS campus taken over by robots!
News
Students are required to build autonomous robotic vehicles with a sensor system to detect specific colours on a multi-coloured track.

Read more...
Altron Arrow FAE earns STMicroelectronics award
News
Renaldo Fibiger was one of only two people from the whole of the EMEA region who scored 30 out of 31 in the certification course.

Read more...
Infineon to exhibit at Embedded World 2022
News
This Infineon will be showcasing various focus areas dealing with embedded systems and the internet of things.

Read more...
Avnet Abacus congratulates Bourns on 75 years of innovation
Avnet Abacus News
This year also marks a milestone with the 21st anniversary of the distribution alliance between these two companies.

Read more...
New product marketing manager for Yamaha’s SMT section
News
Yamaha appoints Kamil Stasiak, a 10-year veteran of the industry, as product marketing manager for its surface-mount technology section.

Read more...
Partnership between mLab and MICT SETA announced
News
The MOU between the two parties will seek to upskill South Africans, allowing them to keep up with a rapidly changing employment market.

Read more...
Infineon’s easy-to-use replacement for legacy barrel jacks
Altron Arrow News
It is estimated that over 10 billion power tools are still using the old barrel jacks for their power needs, which will need to change.

Read more...
Worldwide silicon wafer shipments edge higher to new record
News
SMG reports that worldwide silicon wafer shipments in the first quarter of 2022 surpassed the previous record high set in the third quarter of 2021.

Read more...
Arrow Electronics announces alliance with Senseye
Altron Arrow News
The agreement will see Arrow Electronics together with Senseye bringing to market AI-based predictive maintenance solutions for industrial sectors.

Read more...