Distortion-controlled data compression is lossy signal compression in which the amount of distortion introduced into any small portion of a signal is strictly limited. This article gives results on various practical aspects of quantization and distortioncontrolled compression. The primary focus is near-lossless compression, as accomplished by predictive techniques. For compression of noisy sign...

In this paper we present a time domain signal compression algorithm based on the coding of line segments which are used to approximate the signal. These segments are fit in a way that is optimal in the rate distortion sense. The approach is applicable to many types of signals, but in this paper we focus on the compression of ElectroCardioGram (ECG) signals. As opposed to traditional time-domain...

When transmitting a sampled signal digitally, data and error correction bits must be transmitted at least as fast as the sampling rate. Typically, each bit is allocated the same transmission time interval, which means the optimal detector yields the same error probability for each bit. An alternative is to vary the bit interval duration according to the bit’s contribution to the reconstructed s...

The systems which have the high peak-to-average power ratio that is OFDM systems which degrades the performance of the amplifier. To overcome this, various distortion and distortion less algorithms are suggested. The Partial Transmit Sequence (PTS) is the technique that is distortion less which separates the sequences of input to the subsequences and selects minimize optimized PAPR in the signa...

Traditional multicarrier techniques perform a frequency-domain decomposition of a channel characterized by frequency-selective distortion in a plurality of subchannels that are affected by frequency flat distortion. The distortion in each independent subchannel can then be easily compensated by simple gain and phase adjustments. Typically, digital Fourier transform schemes make the implementati...

Traveling Wave Tubes (TWTs) are microwave and millimeter wave amplifiers used in radar, satellite communications, and electronic countermeasure applications. On a satellite, the TWT provides the final communications signal boost before transmitting the signal back to earth. In electronic countermeasures, TWTs boost signals that are sent out to deny detection by an enemy radar. The TWT, as with ...

A new wavelet-based L-infinite-constrained fixed and embedded coding technique is proposed in this paper. For any desired distortion bound, the embedded bit stream can be truncated at a corresponding bit-rate, for which the required upper bound on the individual elements of the reconstruction error signal is guaranteed. The original signal can also be coded up to a fixed a priori user-defined d...

Very recently, we proposed an echo hiding technique in subband signals, which decomposes the low frequency sub-band signal repetitively using wavelet transform, and then inserts one of two different echoes in specific sub-band signal according to the watermark bit to be embedded. Since this technique takes into account the frequency characteristics of audio signal, it has better performances, i...

The speech intelligibility index (SII) (ANSI S3.5-1997) provides a means for estimating speech intelligibility under conditions of additive stationary noise or bandwidth reduction. The SII concept for estimating intelligibility is extended in this paper to include broadband peak-clipping and center-clipping distortion, with the coherence between the input and output signals used to estimate the...