LandOfFree - US Patents - Listing for Telephonic communications,Supervisory or control line signaling,Signal receiver

Telephonic communications – Supervisory or control line signaling – Signal receiver

Signal detecting device

Telephonic communications – Supervisory or control line signaling – Signal receiver

Signal detection and discrimination using waveform peak factor

Telephonic communications – Supervisory or control line signaling – Signal receiver

Signal detector with coefficient swapping transform unit

Telephonic communications – Supervisory or control line signaling – Signal receiver

Signal detector with duration-based frame width

Telephonic communications – Supervisory or control line signaling – Signal receiver

Signal detector with echo cancellation

Telephonic communications – Supervisory or control line signaling – Signal receiver

Signal detector with matched filter coefficient

Telephonic communications – Supervisory or control line signaling – Signal receiver

Signal-recognition arrangement using cadence tables

Telephonic communications – Supervisory or control line signaling – Signal receiver

Speech immunity enhancement in linear prediction based DTMF dete

Telephonic communications – Supervisory or control line signaling – Signal receiver

System and method for DTMF detection using likelihood ratios

Telephonic communications – Supervisory or control line signaling – Signal receiver

System and method for dual tone multifrequency detection using v

Telephonic communications – Supervisory or control line signaling – Signal receiver

System and method for modifying voice signals to avoid triggerin

Telephonic communications – Supervisory or control line signaling – Signal receiver

System and method for suppressing in-band stimuli and...