Voice Capture Challenges: The Threshold of the Golden Age of Voice

Voice processing and recognition leading to the development of voice-based personal assistants is one of the decade’s greatest achievements and provides a unique opportunity for the audio industry. Leveraging those sophisticated technologies now available to the consumer electronics industry makes the investment on new designs much more exciting. In this article, Mike Klasco provides an introduction to the voice capture, signal processing and voice recognition challenges. This article was originally published in audioXpress, December 2018.

In this Test Bench I characterized the 745PB 1.4” compression driver from Radian Audio Engineering. Based in Orange, CA, Radian is a serious player in the OEM loudspeaker component business, the sound contractor/fixed installation market, and the portable/tour sound industry. The 745PB has the expected rich feature set of other Radian compression drivers. Subjectively, this speaker is incredibly musical, detailed, and extremely easy to listen to — certainly a goal for all monitors. This article was originally published in Voice Coil, December 2018.

In this Test Bench I characterized the CDX14-2420 1.4” compression driver from UK Pro Sound OEM manufacturer Celestion. Designed for use with 1.4” throat horns, the CDX14-2420 has a 35.6 mm (1.4”) throat diameter driven by a 60 mm (2.4”) diameter voice coil wound with edgewound copper-clad aluminum wire (CCAW) on a high-temperature fiberglass non-conducting former, which drives a deep-drawn titanium diaphragm and polyimide surround. This article was originally published in Voice Coil, December 2018.

For its December 2018 edition, audioXpress compiled a Voice Market Update that explores some of the latest developments and platforms for voice processing, with contributed articles from world-renowned experts in voice. In this article, Benwei Xin and Wenchau Albert Lo explain where designers should focus to Turn Up the Innovation on Smart Speaker Designs. This article was originally published in audioxpress, December 2018.

In this last issue for 2018, we share with you what you need to know about the forthcoming CES 2019 show, Robert Werner tells us everything about the latest software release for the Klippel Analyzer System, and Mike Klasco discusses recycling neodymium magnets. James Croft revisits an Acoustic Passive Radiator Rocking Mode Reducing patent awarded to Bose, Vance Dickason puts a compression driver from Celestion and another from Radian on his Test Bench. This and much more, not to be missed in Voice Coil December 2018.

For this last edition of 2018, audioXpress compiled a Voice Market Update that explores some of the latest developments and platforms for voice processing, with contributed articles from world-renowned experts in voice. The December 2018 edition reviews the ZOTL Ultralinear Power Amplifier from Linear Tube Audio; explains how to explore Soviet Germanium Transistors; and measures new SMT Low-Voltage JFETs. This is an edition you don't want to miss.