Estimating MP3PRO Encoder Parameters From Decoded Audio
نویسندگان
چکیده
We present an approach to estimate encoder parameters from previously MP3PRO-compressed, then decompressed audio material. The algorithm has been designed to identify the presence of spectral band replication (SBR), and for bit-rate detection. Furthermore, MP3 compression parameters like frame offset and block type are detected. As evaluation results show, the approach is able to identify SBR with a high accuracy, while the compression bit-rate detection is prone to errors, especially for higher bit-rates.
منابع مشابه
Expected Distortion of Dct-Coefficients in Video Streaming over Unreliable Channel
The Recursive Optimal per-Pixel Estimate (ROPE) algorithm allows the encoder to estimate the pixel-bypixel expected distortion of the decoded video sequence due to channel loss. The algorithm requires in input an estimate of the packet loss rate and the knowledge of the error concealment technique used at the decoder with no need to perform any comparison between original and decoded frames. Al...
متن کاملInfluence of Encoder Parameters on the Decoded Video Quality for MPEG-4 over W-CDMA Mobile Networks
The MPEG-4 standard provides error resilience tools that can significantly increase the decoded video quality when using error prone media to transmit or store the encoded data. However, the use of these tools introduces extra redundancy and overhead in the bitstreams, which means that the decoded video quality can be severely affected if no careful configuration of the relevant parameters is d...
متن کاملPerformance improvement of a bitstream-based front-end for wireless speech recognition in adverse environments
In this paper, we propose a feature enhancement algorithm for wireless speech recognition in adverse acoustic environments. A speech recognition system is realized at the network side of a wireless communications system and feature parameters are extracted directly from the bitstream of the speech coder employed in the system, where the feature parameters are composed of spectral envelope infor...
متن کاملSpeech-to-lip movement synthesis based on the EM algorithm using audio-visual HMMs
This paper proposes a method to re-estimate output visual parameters for speech-to-lip movement synthesis using audio-visual Hidden Markov Models(HMMs) under the Expectation-Maximization(EM) algorithm. In the conventional methods for speech-to-lip movement synthesis, there is a synthesis method estimating a visual parameter sequence through the Viterbi alignment of an input acoustic speech sign...
متن کاملA progressive to lossless embedded audio coder (PLEAC) with reversible modulated lapped transform
A progressive to lossless embedded audio coder (PLEAC) has been proposed. PLEAC is based purely on reversible transform, which is designed to mimic the non-reversible transform in a normal psychoacoustic audio coder as much as possible. Coupled with a high performance embedded entropy codec, this empowers PLEAC with both lossless capability and tine granular scalability. The PLEAC encoder gener...
متن کامل