MASKING OF DUAL TONE MULTI-FREQUENCY (DTMF) TONE IN A VOICE BASED COMMUNICATION

摘要

ABSTRACT MASKING OF DUAL TONE MULTI-FREQUENCY (DTMF) TONE IN A VOICE BASED COMMUNICATION Described herein are a method and a system for masking a dual tone multi-frequency (DTMF) tone in a voice based communication over a telecommunication network. For this, an audio signal is received at a computing system (104). The audio signal is then fragmented into a plurality of audio frames. From amongst the plurality of audio frames, an audio frame is identified as a tonal frame. Thereafter, a speech signal in the tonal frame is detected. Based on the detection, a complete spectral masking or a partial spectral masking of the tonal frame is performed. According to the partial spectral masking, a DTMF tone is masked while the speech signal in the tonal frame is left unmasked. [[ TO BE PUBLISHED WITH FIGURE 3 ]]