a measure of the harmonic distance of the spectrum of the audio signal and / or the relative position of the formant and / or valley of the spectrum envelope of the spectrum , On the basis of this knowledge the proximity spectra utilized to form the context of the spectral coefficients to...
After addition of the WM, we generate the time-domain marked audio signal by combining the vector with the original phase of and passing these modified frames to the inverse MCLT. Fig. 1 illustrates this process on an example time-domain frame. Typically, WM amplitude is set to a fixed ...
Theoretical or Mathematical/ audio coding filtering theory noise quantisation (signal) security of data signal detection signal sampling spread spectrum communication watermarking/ spread-spectrum watermarking audio signals multimedia copyright protection format-independent metadata video signals editing direct-sequen...
[Also in Divisions G5 and H3] The spectrum of audio-frequency signals, particularly in an electronic musical instrument, is modified by a filter including a photo-sensitive element the electrical properties of which are controlled by a co-operating light source. The filter may be a passive ...
Test results also indicate that the performance of the self-normalized FFT-based spectrum is close to that of the original auditory spectrum, while its computational complexity is significantly lower 展开 关键词: audio signal processing computational complexity fast Fourier transforms signal classification ...
Use of pulse echo and radar technologi... Ajluni,Cheryl - 《Electronic Design》 被引量: 17发表: 1994年 Spread spectrum receiving device A spread spectrum receiving device is disclosed, in which data demodulation is effected in such a way that a received signal is divided into two parts, ...
Spread spectrum technology can be used for implementing watermarking of digital audio signals, whereby the watermark signal can be modulated by a spreading function or a PN sequence before it is shaped according to psycho-acoustical laws... PG Baum,V Walter - EP 被引量: 12发表: 2005年 加载更...
The core part of the script is the Fourier transform done via scipy.signal.spectrogram(). I have not done any automation around the file parameters, but it should work with typical audio files containing music. Open an issue on GitHub if something doesn't work as it should, or hack the ...
Noise reduction on a video signal is achieved by an adaptive filter system which is capable of automatic changes in filter parameters. This inventive concept includes an automatic method of independently changing both the width and cent... JC Cooper - US 被引量: 146发表: 1986年 ...
1.5A is the time domain display of a recorded audio signal with a frequency of 1000 Hz sampled at 16,000 samples per second, while the frequency content display of plot (B) displays the calculated signal spectrum vs. frequencies, in which the peak amplitude is clearly located at 1000 Hz....