Sound reproduction apparatus

Sound reproduction system and a sound reproduction method

Spectrum displaying device for audio device

Speech aiding by indicating speech rate is excessive

System and method for adjusting frequency response...

System and method for conditioning a signal received at a...

System and method for dynamic sound delivery

System and method for performing acoustic analysis of devices

System for adaptively reducing noise in speech signals

System for evaluating abnormal sound, sound recorder and...

Tone discrimination circuit

Universal beat synchronization of audio and lighting sources...

Vehicle radio automatic volume adjustment system

Voice evacuation system

Voice start recording apparatus

Volume adjusting system and method

Warning device programmable to be sensitive to preselected sound