Apparatus for use in conjunction with lipreading by the profound

Arrangement for controlling the amplitude of an electric signal

Arrangement for recognizing sounds

Artificial intelligence pattern-recognition-based noise reductio

Audible display of electrical signal characteristics

Audio frequency multiplication device

Audio frequency multiplication device

Audio pre-processing methods and apparatus

Audio reproduction apparatus

Audio signal recognition computer

Audio signal recording and reproducing apparatus utilizing digit

Audio subband encoded signal decoder

Audio visual speech recognition

Audio-augmented data keying

Automatic generation of simple Markov model stunted baseforms fo

Automatic illumination switching device

Automatic length-reducing audio delay line

Automatic speech recognizer for real time operation

Automatically controlled amplifier arrangement

Binary autocorrelation processor