Questions tagged [distortion]
The distortion tag has no usage guidance.
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How does camera intrinsic parameters change after undistortion
Here is my goal: I have used OpenCV to estimate a camera's intrinsic parameters and distortion coefficients. In order to avoid having to deal with the camera's distortion going forward, I would like ...
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What measures are used to identify a faulty speaker?
I'm working on building a mobile app that would play a sound via speaker, record itself and process this recording to identify faults within speakers, what meastures or parameters should be considered ...
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Can a bad quality sound be measured via THD?
I'm trying to create an app that measures the audio quality, this is ideally to filter out blown out or cracking speaker who has different types of distortions, what would be the best measurement ...
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Constraints in Dynamic Time Warping for Speech
The Dynamic time warping is applied for time normalization. As shown in the diagram, two different signals with $Tx$ and $Ty$ time instants, are time-normalized to have $T$ time instants. $\phi$ is ...
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What exactly is transmitted in the channel in lossy compression?
Consider the problem of lossily compressing a memoryless binary source $X
\sim \operatorname{Bernoulli}\left(\frac{1}{2}\right)$ at target Hamming distortion $D < \frac{1}{2}$. According to the ...
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Distortion-Rate function for standard Gaussian signals quantized with a uniform alphabet
Let's say $X \sim N(0, 1)$ is a standard Gaussian input signal and $Y \sim U\{y_1, y_2, \cdots, y_{16}\}$ follows a discrete uniform distribution (in fact, $\{y_1, y_2, \cdots, y_{16}\}$ is a ...
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Channel Estimate for OFDM shows distortion for first last order samples
The Channel Gain Estimation was obtained using Least Square method as follows:
Hk= mean(Rx_LTS ./ Tx_LTS, 2); k= -26 to 26
Where Rx_LTS is the received long training sequence (52 samples after ...
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What kind of distortion effect is this?
Here is the image of a plugin distortion I have applied to a sine wave.
The sound characteristic is heavily distorted and digital but still good sounding bass wave.
Any ideas what kind of distortion ...
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Stream gate - removing samples from timeline. Pitfalls?
I'm working with gnuradio. What I want achieve is extract signal from full stream by some kind of stream gate (based on tags) and after that write to file only timeline where signal exists. In my case ...
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Is this a noise or what? (Sinusoidal signal frozen for a short time)
I am studying a pair of AC signals for voltage and current. In a long run, I found a distortion happening as shown in the attached picture. I want to understand what could possibly have happened in ...
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Calculating THD vs. Frequency of an Acoustic System using the Exponential Swept Sine Method
I am working on analyzing the total harmonic distortion (THD) vs. frequency curve for an acoustic system. I am aware of the traditional method of exciting the system with a mono-frequency wave and ...
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DSP function used by musical distortion plugins
In short: what kind of mathematical function was applied to this sine WAVE?
I am trying to implement my own distortion plugins. Amongst other things I have read several chapters of Will Pirkle's book (...
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How to avoid harmonic distortions in a DAC?
I have a DAC which is assumed to be nonlinear, such that it produces unwanted harmonic distortions at integer multiples of the input frequencies. (EDIT: Any other nonlinear distortions, such as ...
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Troubleshooting distortion in room impulse response measurements:
I am collecting data for a project, where I am measuring the room impulse response by playing a sine sweep from a speaker (QSC K8 1KW Active Loudspeaker) and measuring it from the other side of the ...
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WAV file audio sync/distortion issue
I was using Scarlet 2i2 audio interface plugged into an Android phone. Monitor headphones on the interface sounded great! I recorded a WAV file of a kids' concert with the USB Audio Recorder Pro app, ...
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