Questions tagged [music]

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Bandwidth of an entire song

My question has to do with the difference between the frequencies of a single note, and the frequencies of an entire song. If I have a 5 second signal of the form: $x(t)=\sin(8\pi t)$, here is the ...
Levi's user avatar
  • 157
1 vote
3 answers
85 views

FOURIER TRANSFORM: How can i find the index of data points

I am a senior in high school and am currently trying to conduct an exploration of Fourier Analysis, specifically using the Discrete Fourier Transform to analyse a chord played on my piano. Basically, ...
Ralph Khouri's user avatar
1 vote
0 answers
48 views

MFCCs are useful for speech & music analysis. For music, why isn't the 12-tone scale used instead of the mel scale?

As far as I understand, the mel scale was developed empirically using something akin to "just noticeable differences" in a subject's perception of frequencies. The scale ends up being a log ...
sguis's user avatar
  • 11
0 votes
0 answers
49 views

Fourier Transform and Music Analysis

I am a senior in high-school and am currently trying to conduct an exploration on Fourier Analysis, specifically using the Discrete Fourier Transform to analyze a chord played on my piano. Basically, ...
Ralph Khouri's user avatar
4 votes
2 answers
291 views

Smallest Eigenvalue in the Derivation of the MUSIC Algorithm

I am seeking clarification on a particular step in the derivation of the MUSIC algorithm as presented in a specific paper. Here, there is an intermediate step I cannot follow and I would appreciate ...
Naetmul's user avatar
  • 145
0 votes
0 answers
31 views

FMCW RADAR using Phased Array Antenna

I need assistance to calculate angle of arrival using MUSIC algorithm for Phased Antenna Array with GNU radio and USRP #Zeeshan
Navkaran Ghumman's user avatar
1 vote
1 answer
125 views

MUSIC algorithm on CSI data

I am trying to write a simulation code to estimate AOA's from channel state informations(CSI) using MUSIC algorithm. I am using OFDM with 64 subcarriers. Is there any material on how to estimate AOAs ...
Avishek's user avatar
  • 11
2 votes
2 answers
281 views

How to use MUltiple SIgnal Classification (MUSIC) algorithm to detect the wavenumber of a received signal at array of sensors?

I am working on analyzing data obtained from Fiber Optic - Distributed Acoustic Sensor (DAS) to estimate the properties of acoustic waves that impinge FO cable, such as velocity of acoustic waves. FO-...
Engineer's user avatar
  • 173
3 votes
3 answers
346 views

Can one use MUSIC algorithm to estimate DOA for a circular microphone array with a small radius?

I am trying to locate the sound source using MUSIC algorithm in a circular microphone array. The array that I am using is "ReSpeaker Mic Array - Far-field w/7 PDM Microphones", and the ...
Kamal's user avatar
  • 31
0 votes
2 answers
190 views

confusion understanding/interpreting power spectrum of audio in MATLAB?

Please find attached snapshot. I am confused regarding power spectrum in MATLAB as according to google definition in attached snapshot"the distribution of the energy of a waveform among its ...
DSP_CS's user avatar
  • 1,900
1 vote
1 answer
213 views

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 (...
adrienbourgeois's user avatar
0 votes
0 answers
26 views

Segmenting audio in its different parts using deep learning

I am trying to segment a song into its different parts. In pop music, it's common for a song to have a verse and a chorus. And they repeat. So it should be possible to use deep learning to find the ...
Tria Ufo's user avatar
1 vote
2 answers
315 views

Algorithms for real time multi-pitch guitar detection

I've been looking for info on this topic for a while and I came across several algorithms that may be suitable for this purpose. Specifically I'm interested in getting a frequency representation like ...
Isaac's user avatar
  • 113
0 votes
1 answer
113 views

FFT vs Gabor Transform

I am quite new to signal processing, so I would need some help regarding a project. I am interested in increasing the bass of a song from Spotify. At first I was thinking that applying a FFT to it to ...
IceCode's user avatar
2 votes
2 answers
170 views

Are there ways to reduce the smearing of zero-padding interpolated data?

Are there ways to reduce the smearing / spectral leakage of zero-padding interpolated data? I learned that, given a small collection of samples, one can increase the frequency resolution of an FFT ...
Alex Larson's user avatar
1 vote
0 answers
42 views

Convert MUSIC algorithm to EV

I write some code, but result looks very strange: ...
Dmitry  Sokolov's user avatar
2 votes
1 answer
336 views

Synthesizing piano

The sound of the piano is something very complex. There are various elements to consider such as action, hammer, soundboard, sympathetic resonance, tuning age and even room reverb. Some companies (...
Alessandro Costantino's user avatar
3 votes
1 answer
144 views

Uniform density 2d peak detection of spectrogram

I am trying to recreate the algorithm used by Shazam to recognize music, as outlined in the paper An Industrial-Strength Audio Search Algorithm. The algorithm performs a specialized peak detection to ...
Jonathan's user avatar
  • 131
0 votes
0 answers
144 views

Why MUSIC algorithm fail when the antenna spacing is larger than half wavelength?

I'm studying MUSIC algorithm for far-field DOA estimation. I found that when the antenna spacing $d$ is larger than half wavelength $(\frac{\lambda}{2})$, the algorithm fails and the spatial spectrum ...
McZhang's user avatar
  • 73
7 votes
2 answers
419 views

Why is the null of an adaptive beamformer narrower than antenna beam-width?

Question for those familiar with adaptive beamforming: Why is the null formed by an adaptive beamformer much narrower than the beamwidth of the antenna array? Concrete Example Suppose we have a simple ...
Gillespie's user avatar
  • 1,738
1 vote
1 answer
149 views

Relation of pitch to frequency?only with fundamental frequency or also with harmonics?

How is pitch related to frequency.? If there is a pitch for a fundamental frequency, will that pitch be same for harmonics?
DSP_CS's user avatar
  • 1,900
3 votes
1 answer
516 views

MUSIC implementation in Pyroomacoustics library

I am currently using the multiple signal classification (MUSIC) algorithm provided by the Pyroomacoustics library in order to estimate direction of arrival angles and it works pretty well for both ...
Avio's user avatar
  • 132
1 vote
0 answers
251 views

How to apply MUSIC to FMCW radar IF data?

I'm working on target extraction with raw FMCW ADC data. I arranged my received data in an (numADCsamples x numAntennas x numChirpsPerFrame) radar cube. So far I am using range FFT and doppler FFT to ...
adas123's user avatar
  • 11
0 votes
1 answer
56 views

Is it correct to say that increasing the sampling frequency is same as compressing the duration of an audio signal in MATLAB?

I am trying to read and play with an audio signal in MATLAB. I have coded below clear [y,fs]=audioread('guitartune.wav'); sound(y,fs) This audio clip'guitartune....
jojo's user avatar
  • 83
1 vote
3 answers
110 views

Why mixing two sines sounds like a triangle?

I'm not sure where to post this question that is related to audio synthesis through programmation. More specifically, I'm using a library called synthplayer that implement basic synthesizer in Python. ...
pltrdy's user avatar
  • 111
5 votes
0 answers
107 views

Subspace Methods - Eigenvalues of the Signal Subspace

Subspace frequency estimation methods like MUSIC or ESPRIT decompose the signal correlation matrix into a signal and a noise subspace. Assume the signal model is given by $$\boldsymbol{s} = \...
Lukas's user avatar
  • 185
-1 votes
1 answer
181 views

How can I recognize and distinguish musical instruments by timbre? (without machine learning)

I understand that there is a the Timbre but I don't really understand how can I use it to differ them from each other and actually don't understand what is a Timbre, is it a graph? Is it a number that ...
AnonimousSignal's user avatar
1 vote
1 answer
811 views

Identifying Instruments within a music file

Say I have a file that contains a few musical instruments, how can Identify the name of each one (ultimate goal) or at least the category they belong to, like wind instruments? For example, if I load ...
adimath's user avatar
  • 39
0 votes
1 answer
171 views

Identifying an Instrument

Say I have a file that contains a single musical instrument, how can I use python code to detect which instrument is it (ultimate goal), or at least what is the category of instruments it belongs to (...
adimath's user avatar
  • 39
-1 votes
1 answer
545 views

Weird crackling during audio playback - web audio api

I am using Web Audio API + extended Karplus-Strong algorithm to generate plucked string sound and play it. The problem that I face is sometimes there's a weird crackling sound/thump when playing some ...
Юрій Кравець's user avatar
2 votes
0 answers
211 views

Introducing Feedback to Miller Puckette's Time-Domain Pitch Shifting Algorithm without Discontinuities

I've implemented Miller Puckette's time-domain pitch shifting algorithm (http://msp.ucsd.edu/techniques/v0.11/book-html/node125.html) in PureData's help files in C++ (my code here: https://github.com/...
panthyon's user avatar
  • 1,123
1 vote
2 answers
397 views

Audio compressor delay/lookahead

I am making a real-time audio compressor/limiter. I am in little doubt about the delay. What is typical delay times for a compressors or limiters delay/lookahead time? Most other compressors I see don'...
Invariant's user avatar
  • 159
4 votes
3 answers
710 views

How to detect repeating music?

Suppose you have a music data-file (for example mp3) with a single audio stream which contains an audio time-series for 3 hours, but you want to find out if that audio file (maybe some compilation) ...
Alex's user avatar
  • 141
0 votes
1 answer
114 views

Synthesizing guitar sounds given a frequency

I'm trying to build a web app which plays a sequence of notes. The notes should have a timbre of different instruments. For now I only concentrate on a guitar synthesis. I'm using Web Audio API for ...
Юрій Кравець's user avatar
3 votes
3 answers
133 views

Is it possible to "determine"/"evaluate" the perceived quality of a music audio/video record by using software in an automatic way?

I have a fairly large collection of audio/video bootlegs recorded at live performances by various artists. The recordings all come from very different sources and people through decades, and all of ...
terrorrussia-keeps-killing's user avatar
1 vote
2 answers
67 views

Middle C spectrogram in RavenPro

I've been trying to perform a cross-correlation analysis between a Middle C sound (C4) and C5. I'm using the software RavenPro by Cornell to do the analysis. However, I've been unable to see a ...
Antara Kulkarni's user avatar
-1 votes
1 answer
201 views

Use music-doa on CSI

I have a matrix of Channel State Information (CSI) that is obtained from a WiFi card (using Linux CSI tool with intel 5300). I try to use musicdoa() function in ...
Ofer's user avatar
  • 1
3 votes
2 answers
176 views

How to determine if certain notes exist within polyphonic music?

Given a segment of audio, if you were to calculate the histogram of frequency amplitudes for all standard musical note frequencies present in the audio, how would you check to see if 2-3 specific ...
Cerin's user avatar
  • 618
0 votes
1 answer
210 views

Number of antenna to perform MUSIC algorithm

When the MUSIC algorithm is used for direction of arrival (DOA) estimation it can identify up M-1 signals, where M is the number of array elements. MUSIC can also be used for spectral frequency ...
BigBrownBear00's user avatar
1 vote
1 answer
136 views

Performing root-music, how do i retrieve frequency and phase data of a signal?

I'm trying an alternative method to the classical fft to do signal analysis. I perform root-MUSIC on a certain known signal + noise in matlab with the function 'rootmusic'. This gives gives the signal ...
Joost Poelmans's user avatar
1 vote
1 answer
541 views

How does Music algorithm differ from simple DFT/FFT for frequency estimation?

I would like to know why would someone choose to use Music algorithm from frequency estimation when one can simply use DFT/FFT which are much simpler. What is the intuitive way for understanding Music ...
user3921's user avatar
  • 267
4 votes
1 answer
429 views

FFT seems more accurate than MUSIC algorithm?

I created a signal with two sinusoids and added increasing amounts of random noise to it. The results of running the FFT and MUSIC on this signal are shown in the image below. Ignoring the fact that ...
Bertus101's user avatar
  • 141
1 vote
1 answer
117 views

What are features in signal processing using a more tangible or less abstract description

I'm learning about signal processing for music, and in my reading I keep finding the term "features". I find that they never really give a concrete example of what they mean by "...
Sam's user avatar
  • 111
1 vote
1 answer
1k views

MUSIC algorithm for DOA with floating point input signals

I am writing a Direction of Arrival (DOA) estimator using the MUSIC algorithm in python and am having trouble getting the correct spectrogram output. Specifically, my resulting graph comes out aliased ...
Felkin's user avatar
  • 11
2 votes
1 answer
477 views

How does one calculate a steering matrix for DOA given real data and only antenna positions

I am currently trying to implement the MUSIC algorithm for a real dataset which captures a sound signal in a room using a cubic 8 sensor array setup. Every example I've found for the MUSIC algorithm ...
Felkin's user avatar
  • 31
4 votes
1 answer
288 views

MUSIC algorithm terminology

Looking for clarification on the notation described in the MUSIC algorithm in Ralph Schmidt's IEEE paper$^{[1]}$. The data model is: $$X = AF + W$$ Schmidt defines the following: ...
BigBrownBear00's user avatar
2 votes
0 answers
205 views

Frequency Estimation Using Multiple Signal Classification Algorithm (MUSIC)

I'm working on side research that deals with signals and data in the time domain. currently, I want to use the multiple signal classification algorithm (MUSIC) which is mainly used for frequency ...
Jamal Alkelani's user avatar
3 votes
2 answers
2k views

MUltiple SIgnal Classification (MUSIC) Implementation

I have a linear 4 element antenna array currently in my design, I am able to obtain the I/Q data from each antenna. Now I am trying to implement the MUSIC algorithm to obtain the AoA (Angle of Arrival)...
radar101's user avatar
0 votes
1 answer
58 views

Hw does a digital piano work?

I know someohow it combines different harmonics to synthsis note, but I don't exactly know how this happens. Does digital piano use pwm to synthesis a note?
Ardawan's user avatar
3 votes
3 answers
1k views

Intuitive explanation of subspace

There are many techniques in signal processing that use eigen analysis (MUSIC, SVD, eigen decomposition, etc) that result in signal and noise subspaces.The mathematical definitions for signal ...
BigBrownBear00's user avatar