Matching Channel Codecs to the Speech Codec
ADAPTIVE CODEC MODE ASSIGNMENT FOR VOICE OVER IP WITH AMR SPEECH CODEC
... the channel conditions can reduce packet loss to improve the speech ...The speech codecs adopted in ...These codecs have fixed bit-rates as shown in Section ...the channel ...
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Noise robust exemplar matching with coupled dictionaries for single-channel speech enhancement
... single-channel speech enhance- ment system based on the noise robust exemplar matching (N-REM) framework using coupled ...noisy speech segments as a sparse linear com- bination of ...
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Non-intrusive identification of speech codecs in digital audio signals
... a speech signal may be pro- cessed to accentuate some of the signal characteristics imparted by the source ...the codec artifacts in a given signal: any aggregated noise spectrum vector, or the sample ...
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LITHUANIAN SPEECH RECORDS DATABASE FOR VOICE CODECS QUALITY ASSESS
... AMR codec that were chosen by 3GPP as default voice codec in 3G mobile communications ...in codecs performance ...telecommunications. speech records database ...Lithuanian speech ...
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Instrumental Estimation of E-Model Parameters for Wideband Speech Codecs
... with codecs, quantizing distortion, as well as frame erasures or packet ...transmission channel, for example, a coding-decoding process, on the basis of the reference (clean or system input) speech ...
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Non-intrusive identification of speech codecs in digital audio signals
... the channel. At the receiver, these parameters are fed into a speech synthesizer that is based upon the same vo- cal model in order to generate synthetic speech resembling the original ...waveform ...
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Steganography integration into a low-bit rate speech codec
... Rate Speech Codec Yongfeng Huang, Chenghao Liu, Shanyu Tang, Senior Member IEEE, and Sen Bai Abstract — Low bit-rate speech codecs have been widely used in audio communications like VoIP and ...
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Universal steganography model for low bit-rate speech codec
... proposed model, VoIP steganography in iSAC had little impact on the PESQ of the speech and the average deterioration of PESQ was under 5%. The detection rate using DMFCC-SVM steganalysis method was under 62.75%, ...
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SPEECH QUALITY EVALUATION BASED CODEC FOR VOIP OVER P
... voice CODEC (COder/DECoder) w hich is a device and/or software program that is used typically to digitally encode an analog voice waveform ...standard CODECs, and lists their ...a codec is to obtain ...
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Grayscale and colour image Codec based on matching pursuit in the spatio-frequency domain
... , (7) sampled at 2w + 1 = 3, 5, 7 or 9 points (t ∈ {−w, . . . , w}) and normalised to have unit norm. The values of parameters σ, f, φ are taken, following [11], to be: σ ∈ {1, 2, 4, 8, 12, 16, 20, 24}, f ∈ {0, 1, . . . ...
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Considering Bluetooth's Subband Codec (SBC) for Wideband Speech and Audio on the Internet
... audio codecs should be used over a Bluetooth link. The codecs include MPEG- 1, 2 audio (MP3), MPEG-2, 4 AAC, ATRAC and the mandatory SubBand Codec ...audio codecs has a low algorithmic ...
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Speech Coding Combining Chaos Encryption and Error Recovery for G 722 2 Codec
... encrypted speech signals are similar to the white noise, which indicates that no residual intelligibility can be useful for eavesdroppers at the communication ...reconstructed speech signals (Figures 10-c ...
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A Novel Scheme for Single-Channel Speech Dereverberation
... single-channel speech enhancement scheme. Degraded speech obtains a sparser representation of the linear prediction residual in the first stage of our proposed scheme by applying orthogonal ...
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Gaussian Mixture Model-based Quantization of Line Spectral Frequencies for Adaptive Multirate Speech Codec
... CELP codec is able to pro- duce satisfying total results even in conditions when spectral envelope quantization causes a relatively high difference between the ideal en- velope ( determined by the LPC analysis ) ...
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Multi-channel Feature Enhancement for Robust Speech Recognition
... statistical matching methods, the impact of multi-channel occurrences of same speech source in histogram equalization has been also ...the speech signal direction of ...
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Automatic Speech Recognition on a Firefighter TETRA Broadcast Channel
... before speech is recorded, the beginning and the end of an utterance is often ...TETRA codec, the signal filter induced by the main radio station and the handheld device are ...TETRA codec itself al- ...
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Research on Channel Codec of DCR System Based on CMX7141
... of channel codec for DCR system has an important impact on the ...on codec design in DCR system and punctured convolutional encoding and decoding analyze the BER of different codec mode and ...
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Negotiation of an Audio Codec from a List of Codecs on Each Leg of a SIP-to-SIP Call on the Cisco Unified Border Element
... Audio Codec from a List of Codecs on Each Leg of a SIP-to-SIP Call on the Cisco Unified Border Element The Negotiation of an Audio Codec from a List of Codecs on Each Leg of a SIP-to-SIP Call ...
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C-Media CMI9761A / 9761A+ 6 Channel AC Audio Codec
... Copyright 2003-2004 © C-Media Electronics Inc. Page 6 3. Overview C-Media CMI9761A/9761A+ is a 6 channel, Intel ® AC’97 rev 2.3 compliant audio codec. The applicable M/B chipsets are extensive, including ...
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Error-resilient performance of dirac video codec over packet-erasure channel
... use of predictive coding and variable length coding. This paper investigates the performance of a simple and low complexity error-resilient coding scheme which combines source and channel coding to protect ...
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