Questions relating to Mathematica's sound and audio functionality, including Play, Sound and Speak

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0
votes
1answer
76 views

Plot Notes present in sound sample

I would like to visualize a sampled sound, and place the sounds as notes starting from C0 to A8 or such. I have a table of ...
1
vote
1answer
116 views

How to find the local maximum of a list [duplicate]

I have imported a wav sound that a = Import["sound.wav"] and we know that soundStrength = a[[1]][[1]] is a list of sound ...
1
vote
0answers
49 views

Automatically Recording Sound

I was hoping I could recreate a noise cancelling set-up by recording sound from the microphone in my headset or from the computer and play it back in my speakers or headphones with the appropriate ...
2
votes
1answer
68 views

Getting MIDI SoundNote Pitches as Numeric Values

I'm trying to do some evaluation on notes (specifically the pitches) imported from a MIDI file. I've imported a list containing tracks of sound notes with ...
0
votes
0answers
44 views

Play in Linux causes mathematica to freeze

It seems that when I run Play in Mathematica, something as basic as Play[Sin[440 * 2 π * t], {t, 0, 1}] the output generates ...
2
votes
1answer
141 views

Extract the left channel from an mp3 file

I'm trying to control where a sound is going to be heard, in the left For example, when I import an mp3 file, and I want to hear it only from the left ear, what should I do? I've never worked with ...
0
votes
1answer
73 views

ListLinePlot “Cannot Take Positions” error with Fourier of WAV file

When I try to do a Fourier analysis of a WAV file with a sample rate of 22050 I get an error "Cannot take positions". What am doing wrong? ...
5
votes
0answers
91 views

Manipulating the pitch of a sound

After reading Manipulating a continuous stream of sounds I have to ask about controlling the frequency of a Sin sound in a continuous manner, with a ...
4
votes
2answers
268 views

Why can I still hear sound when the frequency of the periodic function inside Play is lower than the range of human ear?

This question is originally part of this question, but this issue seems to be different from the former one, so I think it's better to start another question for it. Usually, human can't hear sound ...
4
votes
4answers
461 views

Why can I still hear sound when the frequency of the periodic function inside Play is higher than the range of human ear?

We know that usually sound that is perceptible by humans has frequencies from about 20 Hz to 20,000 Hz, but as the title said, I can still hear the sound of the outputs of the following code: ...
1
vote
1answer
170 views

Generating a sound with pitch like Sin[2Pi t] as t steps from 0 to 1

I am trying to generate a sound with pitch that goes up and down like a sine wave from 0 to 2Pi. So the pitch should be ...
-1
votes
1answer
132 views

How to remove the background noise from a single sound file? [duplicate]

I wandering if the following steps are practical or not? Import a sound in wav format, if not (for example, mathematica does not support ...
5
votes
1answer
138 views

Looking to create a lesson on sensory perception of sound

I'm looking to show students a lesson on sensory perception, more specifically on masking. I know a little Mathematica but sound processing has evaded me. I would like to create a white noise and ...
3
votes
2answers
401 views

Frequencies represented in a DFT list (Fourier[])

I have a sound sample (sample rate: 44100). When I have a list l with n successive elements from the sample, ...
4
votes
1answer
117 views

Import audio in uLaw format?

How do I import a uLaw-format audio file into Mathematica? Here's an example: hello-world.ulaw For reference, here's the same file in wav format: hello-world.wav As I understand it, the uLaw ...
1
vote
1answer
206 views

How to extract Audio Record data form Sound[SystemDialogInput[“RecordSound”] ?

When I set parameter "SoundReg" to collect Audio Steaming data - it's working After that I use Button\["Record"\] In my ...
2
votes
1answer
175 views

Demonstrate aliasing effect in sound

I'm trying to demonstrate the aliasing effect using sound, that is, when the sample rate is fixed and the sound frequency is increased, we would hear the sound pitch go down when we pass the Nyquist ...
4
votes
1answer
161 views

How to fix MIDI playback on OS X?

Sometimes sounds specified using SoundNote (i.e. things played using MIDI) don't play properly on OS X. Some notes are missing and some are stuck. At least this ...
0
votes
1answer
199 views

Can I take derivative of a function that represents a piece of music?

Can I take the derivative of a function that represents a piece of music? The music is given in .mp3, .midi or whatever comes in handy.
-1
votes
1answer
120 views

Creating a number station [closed]

This is a question about manipulating sound (wav files). The goal is to produce something that sounds like a number station broadcast, see e.g., 4:00 in http://www.youtube.com/watch?v=EdnoAJ7KoFE It ...
5
votes
1answer
115 views

Is there a way to prevent audio from becoming out of sync with graphics?

The code below could be used to say help Pre-Kindergarten and Kindergarten children learn about the numerals and numbers from one to 9. The problem is that this age group would be prone to just ...
1
vote
1answer
113 views

How can I import sound from within a Manipulate expression?

I want to import sound from a file, record, and import sound. ...
0
votes
1answer
99 views

How to import sound file from computer? [duplicate]

I know you can import sounds/images from the Mathematica library, but I was wondering if I could import sounds I have on my computer (i.e. .wav files)? I've tried using the Import functon and properly ...
5
votes
1answer
64 views

Why does Play fail to produce a widget sometimes?

If I define: aNote[x_] := Sin[440 * 2 * Pi * x]; then this works (i.e. it produces a widget with a Play button, and clicking on this button produces an A note): ...
8
votes
2answers
905 views

How to approximate a given WAV file with trigonometric series?

I'd like (together with a few people) to prepare a presentation about Fourier series for middle/high school students. I thought it might be quite cool to play a violin sound from, say, a WAV file, ...
4
votes
3answers
314 views

Using Manipulate to vary the frequency of a sound produced by SoundNote[]

I have tried various ways to combine Manipulate and Sound/SoundNote that would allow me to vary the frequency of a sound while it is being produced. The addition of Dynamic didn't help, but did ...
6
votes
1answer
140 views

Why is there a limit of 15 different instruments to be played simultaneously, with Sound / SoundNote?

It seems to be impossible to play more than 15 different instruments simultaneously with the Sound[{Soundnote[...],...}] construct. Any guesses why it is so? With ...
1
vote
0answers
95 views

Better alternatives for the Sound function?

The Sound function represents the sound signal very primitive in my opinion. There are only two buttons (play and pause). No rewind, no playing from some point on (like the most sound players have). ...
4
votes
1answer
404 views

How to get the total intensity of a certain frequency range in an audio file?

Does anyone know how to get the total intensity of a certain frequency range in an audio file? Let's say an audio file has a frequency range from 0Hz to 20KHz, and I want to extract the total ...
3
votes
1answer
225 views

An ancient MIDI keyboard?

There is a demostration project http://demonstrations.wolfram.com/KeyboardAndComposer/ where you can compose Western music using a 97 keys simulated midi keyboard. I study eastern and ancient music ...
9
votes
3answers
454 views

How to play microtonal music using Mathematica?

I am trying to model microtonal music using Play. I have only partial success because it takes such a long time to make some sound. Could you please have a look ...
2
votes
2answers
236 views

Sound data Import Export

Can't regain the data after Export. Create an array of sampled amplitude values: 2. Visualize as sound 3. Save it 4. Get it back 5. ??? ...
4
votes
1answer
200 views

Multiple instrument chord

I would like to create a chord using multiple instruments. This started as an attempt to explain music to a friend but my curiosity has taken over. I am familiar with the SoundNote function. I know ...
6
votes
1answer
404 views

Making a wav file from a list of numbers in Mathematica

I have a list of numbers from a simulation of acoustic pressure generated by a virtual musical instrument by another program (Comsol multiphysics). I would like to "hear" the tone produced by ...
9
votes
2answers
2k views

How do you remove noise to detect just the human voice?

How do you detect different sound frequencies and cut off parts in an audio file? Among instruments, how do you pick up the human voice?
2
votes
3answers
224 views

Notification sound when simulation done? [duplicate]

Possible Duplicate: Customize front end to add notifications when evaluation finishes? How to setup sound alert notification when simulation is complete? I need to do something else while ...
6
votes
0answers
225 views

Realtime audio processing using Dynamic

Can I make real time audio processing with Mathematica in the same way I can do with images using Dynamic[CurrentImage[]]. I know that is possible to use ...
8
votes
1answer
298 views

How to add a short wav music clip into a Mathematica animation

I have the following Mathematica animation: Animate[Plot[k*x^2, {x, -2, 2}, PlotRange -> {{-2, 2}, {-10, 10}}], {k, -2, 2, 0.1}] I also have a sound file ...
17
votes
1answer
313 views

How can I interrupt Speak?

I want to use an event handler to stop speaking: Speak[ExampleData[{"Text", "DonQuixoteISpanish"}]] The only way I can stop this is by restarting mathematica!
4
votes
2answers
236 views

How can I emit a sound only during a mouseover?

Emitting a constant sound or note (no interruptions) for a fixed duration is easy, but a dynamic duration, not so easy.
6
votes
1answer
602 views

How to use and input audio wav file into a Wolfram demonstration

I am trying to send a Wolfram demo, which contains a sound wav file. sound = Import["C:/myfile.wav", "Data"]; snd := sound[[1]]; or snd = sound[[1]]; Is it ...
4
votes
1answer
371 views

How can I regulate 'Play sound duration' in Mathematica 8

How can I regulate the time of play sound[s] - duration in Mathematica 8. I want to import and save wav file in *.nb document & manipulate (with) the sound duration, for example, select sound ...
6
votes
1answer
117 views

Is it possible to concatenate sounds?

I used to be able to make a Table of ListWaveform objects, and Export them; ...
2
votes
1answer
79 views

What replaced ListWaveform?

My old Mathematica code used ListWaveform to produce a sound file from a table of amplitudes and frequencies; this seems to no longer exist. What replaced it?
16
votes
1answer
457 views

Manipulating a continuous stream of sounds

I need some audio-feedback when a locator is moved on a surface. I have the following code that produces a beep every time the dynamic controller is interacted with such that the pitch of the sound ...
16
votes
3answers
1k views

Is it possible to use Mathematica to record sound and/or vision?

I think the title says it all. I know about ImageCapture which seems to capture stills. Can ImageCapture be made to capture a ...
17
votes
3answers
2k views

Can one find the beat of a tune with Fourier analysis?

I'm trying to find out if it's possible to find the beat of a tune by Fourier analysis with Mathematica. I'm taking a 44.1 kHz sample sound and hoping that I might get a nice peak for a frequency ...
6
votes
1answer
2k views

How to extract sample values from an imported WAV file?

Suppose I read a file with B = Import["something.wav"] Now how can I obtain a list of sample values?
15
votes
4answers
942 views

Random data generator

Inspired by Quality of random numbers I would like to set up a true random data generator in Mathematica. My idea is to use the static from an open microphone. I recall reading about extracting the ...
10
votes
2answers
680 views

Creating a realtime MIDI Out

I have a live stream of notes and note velocities using SoundNote and SoundVolume. My problem is that I have no idea how to ...