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SPEECH COMPRESSION AND DECOMPRESSION USING ADPCM TECHNIQUE


Posted by: seminar class
Created at: Saturday 05th of March 2011 12:02:37 AM
Last Edited Or Replied at :Wednesday 06th of April 2011 04:06:03 AM
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GOWTHAM


INTRODUCTION
 Speech coding is defined as a digital representation of the speech signal .
 Speech compression is achieved by representing each sample of digitized data by lesser number of bits.
 In compression technique the 13 to 16 bits data is represented by an equivalent of 4 or 8 bits.
 In decompression technique the compressed data is converted back to original data.
BLOCK DIAGRAM
HARDWARE

 Efficient hardware is developed by this project to implement the powerful and versatile ADPCM speech compression and decompression ..................[:=> Show Contents <=:]



speech compression using GSM RPE-LTP


Posted by: savitha p s
Created at: Friday 25th of February 2011 04:45:06 AM
Last Edited Or Replied at :Friday 25th of February 2011 04:51:46 AM
speech compression ,
he topic.and finally the application of the topic.
thanking you,





yours faithfully,
s..................[:=> Show Contents <=:]



speech compression by novel method


Posted by: suseela
Created at: Monday 24th of January 2011 01:26:12 AM
Last Edited Or Replied at :Tuesday 25th of January 2011 12:32:00 AM
speech compression by novel method , speech, speech compression using waveletscompression , speech compression using waveletsspeech compression techniques, speech encoding , voice compressor, data compressor , voice coding, speech codecs , lpc vocoder, speech codec , data compression, speech coding , speech compression using lpc, speech compression using linear predictive coding , voice compression, speech compression techniques , novel, method , speech compression, seminar on speech compression using lpc , speech compression a novel method, speech compression by novel method , application of speech compression a novel method, speech compression using novel method ,
ca..................[:=> Show Contents <=:]



A NOVEL METHOD OF COMPRESSING SPEECH WITH HIGHER BANDWIDTH EFFICIENCY


Posted by: seminar surveyer
Created at: Thursday 07th of October 2010 06:22:59 AM
Last Edited Or Replied at :Thursday 07th of October 2010 06:22:59 AM
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f samples, say N alone are transmitted. Here  is less than unity, so compression is achieved. The N samples per packet are subjected to a N-Point DFT. Since low pass signals alone are considered here, the number of significant values in the set of DFT samples is very limited. Transmitting these significant samples alone would suffice for reliable transmission. The number of samples, which are transmitted, is determined by the parameter

The parameter is almost independent of the source of the speech signal. In other methods of speech compression, the specific characteristics o..................[:=> Show Contents <=:]



Speech Compression using GSM RPE-LTP full report


Posted by: seminar topics
Created at: Sunday 21st of March 2010 12:04:31 AM
Last Edited Or Replied at :Sunday 27th of March 2011 10:48:13 AM
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GSM 6.10 Vocoder

Key principle: mathematical modeling of the human vocal tract, leading to an efficient compression method for transmitting speech. A vocoder (combination of voice and coder) is used to describe GSM systems tailored for the compression of speech. The sampling rate is 8000 sample/s leading to an average bit rate for the encoded bit stream of 13 K bit/s
5

GSM 6.10 Vocoder

Coding scheme used by GSM 6.10 Vocoder is the Regular Pulse Excitation - Long Term prediction - Linear Predictive Coder (RPE-LTP) Vocoder sends three kinds of information to the receiver:..................[:=> Show Contents <=:]



f IMAGE COMPRESSION USING BIORTHOGONAL 37 WAVELET TRANSFORMS


Posted by: M.swetha reddy
Created at: Saturday 09th of January 2010 08:51:31 PM
Last Edited Or Replied at :Monday 11th of January 2010 04:55:47 AM
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please send me the complete information on wavelet transform for image compre..................[:=> Show Contents <=:]



Speech Compression - a novel method


Posted by: computer science crazy
Created at: Tuesday 07th of April 2009 01:21:25 PM
Last Edited Or Replied at :Friday 09th of September 2011 11:09:24 PM
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ly well for any signal, which is low pass in nature, speech being the more widely used in Real Time Communication, is highlighted here.

As per this method, the low pass signal (speech) at the transmitter is divided into set of packets, each containing, say N number of samples. Of the N samples per packet, only certain lesser number of samples, say N alone are transmitted. Here is less than unity, so compression is achieved. The N samples per packet are subjected to a N-Point DFT. Since low pass signals alone are considered here, the number of significant values in the set of DFT samples is..................[:=> Show Contents <=:]



Speech Compression - a novel method


Posted by: Computer Science Clay
Created at: Sunday 01st of March 2009 02:22:51 AM
Last Edited Or Replied at :Sunday 01st of March 2009 02:22:51 AM
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N number of samples. Of the N samples per packet, only certain lesser number of samples, say N alone are transmitted. Here is less than unity, so compression is achieved. The N samples per packet are subjected to a N-Point DFT. Since low pass signals alone are considered here, the number of significant values in the set of DFT samples is very limited. Transmitting these significant samples alone would suffice for reliable transmission. The number of samples, which are transmitted, is determined by the parameter .

The parameter is almost independent of the source of the speech signal. In oth..................[:=> Show Contents <=:]



Speech Compression - a novel method


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:07:13 AM
Last Edited Or Replied at :Sunday 21st of September 2008 12:07:13 AM
method , novel, Compression , Speech,
ssion. This method saves the transmission bandwidth required for the speech signal by a considerable amount. This scheme exploits the property of low pass nature of the speech signal. Also this method applies equally well for any signal, which is low pass in nature, speech being the more widely used in Real Time Communication, is highlighted here.

As per this method, the low pass signal (speech) at the transmitter is divided into set of packets, each containing, say N number of samples. Of the N samples per packet, only certain lesser number of samples, say N alone are transmitted. Here is..................[:=> Show Contents <=:]



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