Questions tagged [frequency]

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1answer
29 views

Why can I hear this beep at 6 kHz and others cannot?

During a studio recording, I heard a beep and paused the recording. I played it back and neither the actress, sound technician, or assistant director could hear it. I imagined that it could be the ...
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0answers
16 views

What is this empty space in this spectrogram? I have this is some lossless high kHz files

I have this with some albums. Is this something to worry about or is this normal? Or am I missing out on something?
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0answers
20 views

Question about an on-line frequenecy detection app [closed]

https://tuner.ninja/ https://s3.amazonaws.com/wasm-vs-js-tuner/index.html when I run these apps, I get conflicting results. The following is me singing a note, then making two "shushing" ...
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1answer
19 views

Recording sound and getting the frequency of any given point

Not entirely sure if this question goes on this site, but I think it covers this one more than the others. I need to record some audio of human speech and find the frequency of the audio at least 100 ...
6
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1answer
3k views

Frequency and emotional response

I remember that a few months back, someone copied a link to a site that had a great display on the frequency bandwidth and what frequencies affected which emotions and what instruments and or sounds ...
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1answer
120 views

What is the true definition for the length of a pulse (impulse-type sounds)?

What defines the length of a pulse (impulse-type sounds)? i.e. snaps, pops, crackles, bangs, bumps, and rattles. The following 4 pulses are all white noise sustained for 37 ms, but each pulse has a ...
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1answer
33 views

What's the lowest analog audio sound that a CD/44.1kHz audio system can make?

CDs, and other 44.1kHz sampling audio systems, can produce a maximum sound frequency of 20khz in the analog audio range (I'm not sure how the maths goes, but that's apparently true). My question is, ...
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0answers
21 views

Logic EQ creates frequencies

This is probably something standard but it's the first time I encounter it and I don't really know where to find an explanation. Let's say I produce a sine wave at e.g. 440 Hz on Logic. If I then ...
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1answer
122 views

Is a shorter range frequency response better for audio quality

So i'm a designing a speaker system and im choosing between two midrange drivers: Tymphany TC9FD18-08 3-1/2" and Peerless SLS-85S25CP04-04 3-1/2" the frequency responses are 100 to 20,000hz and 70 to ...
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0answers
17 views

Trying to reproduce a constant frequency

I work on an engine which when the throttle is not active seems to have like a constant frequency, I have some examples to analyze. But with the natural inertia at low velocity it's hard to have a ...
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0answers
24 views

Filtering a noise for a sample

I've recorded an engine and I was look for some type of sample: the first (original record) with the engine in rev (throttle active). The second, the engine without adding throttle. Some examples on ...
2
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1answer
36 views

VCV Rack - what is the maximum frequency deviation for FM?

On VCO-1, the amount of FM can be controlled by the "FM CV" knob, which ranges from 0%-100%. I'd like to know the frequency deviation that VCV uses at 100% modulation. I did a few tests to try to ...
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9answers
7k views

Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?

A .wav file created from a .mp3 file has the same frequency domain plot as the mp3 file itself. However, the .wav file created from .mp3 file has larger file size. According the post https://...
3
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1answer
63 views

Can steady-state noise contain a fundamental frequency?

I am doing speech-in-noise testing. We use the so-called matrix test. The Flemish/Dutch version of this test features a female speaker. I ran some sentences through 'Praat' and it provided me with a ...
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2answers
7k views

What does 100Hz 12dB per octave mean?

I have been trying to understand what 100Hz 12dB per octave means in a low pass filter. What does it really mean in full details? Any material can be of help.
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2answers
57 views

How do you change the equalisation of an individual song/audio?

I've been looking for weeks, and I have nowhere else to turn to. I really thought this would be very simple to find, but I'm looking for any type of software that has a 5 band equaliser, that allows ...
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1answer
49 views

Is it possible to seperate an audio file into each frequency of it automatically?

So lets say I have an audio file, "hello.mp3". I want to split this file into all of its frequencies, so if the audio file contains 12hz, 412hz and 200hz, I get files containing those frequencies.
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1answer
80 views

What would cause a recording to have a completely symmetric frequency plot?

I'm developing software that receives PCM audio data and converts it to a WAVE file. The audio stream has the following characteristics: 16 bit signed integers 6000 frames sent every 1/8th seconds, ...
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5answers
673 views

How do I shift the frequency of a track by x Hz?

I have been meditating using binaural beats for some time. I was wondering if the effects could be achieved by using an audio track instead of a static noise. My idea was to take a song, convert it ...
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1answer
44 views

What frequency / quality for voice clips?

I am looking at making some voice clips for teaching languages. I am using Audacity, but am not sure what settings to use. Many people recommend 44,100Hz for regular music recordings. Is this also the ...
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1answer
298 views

Do you ever use Frequency Shifter plugins and how

Do you ever use frequency shifter plugins and how??
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1answer
55 views

How do I fix the frequency of my audio?

I am editing some audio files of an existing game. The current frequency rate Im using is 6500hz and the music sounds pretty bad. P. D If I use 44100hz there will be a lot of noise. I am using ...
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1answer
49 views

Why is there no signal above 11025 in my 44100 recording?

I'm analyzing an audio recording made on a newish MacBook Pro in Logic, using the internal mic. Looking at the spectrogram, there's nothing above 11025 Hz, which is disturbing— if it were, say, 15kHz ...
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4answers
37k views

Is bass boost harmful?

I recently bought a Sony headphone which has "bass boost", and I really love it. I love it so much that I increased the bass (low frequencies) on every device I use it on, with like 7db and decreased ...
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1answer
260 views

Audio spectrum analysis: PC Software vs Hardware Spectrum Analyzer

I need to do some audio spectrum analysis (basically, listening to a machine and tell if it is properly calibrated). I will record the sound it makes with a microphone (it sounds differently if it is ...
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3answers
542 views

What is the “level” of Frequency Modulation of many synthesizers?

I am currently working on FM synthesis and while I do understand the roles of carrier frequency, modulator frequency and modulator amplitude, I've been having problems with understanding how lots of ...
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2answers
184 views

Conditional math (intersection) to join two audio tracks

I do not want the difference. I want the intersection of frequencies. The problem: I have two audio files. One of the files (A) contains the vocals and drums. The other file (B) contains the vocals ...
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1answer
275 views

Intensity, amplitude, frequency, and perceived loudness

If we were to measure loudness solely as a property of amplitude, then high frequency sounds, which contain high energy, would have the same value as low frequency sounds, which contain low energy. On ...
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11answers
5k views

Why can cheap mics be eq to sound like expensive ones?

Other than frequency response, what makes a mic sound good? Say there is a cheap microphone, and an expensive microphone with same frequency response/selfnoise/sensitivity/polar pattern. Now we ...
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2answers
420 views

Bubbly/Wet Sounds with FM synthesis

Here's an example: (wet/bubbly sounds all throughout, particularly in first 10 seconds) I'm wondering if anybody knows any tricks on producing these kinds of sounds, ...
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0answers
113 views

7 band EQ frequencies for full-track playback?

I used to have a Mackie analog mixer, but I've switched over to using a midi controller (Launch Control XL), and I'm not limited by the 5 bands that existed on the Mackie (low cut, 80, 250, 800, 2500, ...
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1answer
37 views

Extract wavelengths or frequencies out of a recorded sound

I have recorded 1 minute of almost silent in woods. there is mostly wind and grass moving sounds. Is there any way to extract wavelength ranges out of it? I only need to know the numbers. I don't want ...
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3answers
836 views

Need help recording ultrasonic frequencies with microphone

I am working on a project; detecting the sounds made by pests in stored grain while eating. I know that the ultrasonic disturbances occur when the pests tear the materials during feeding. I need a ...
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9answers
24k views

What is the frequency step formula for 10 and 31 band EQs?

What is the formula to calculate the bands ranges of a graphical EQ on a mixer? 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400Hz ... etc It seems some of them are doubles. When ...
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2answers
73 views

How much sound quality will I lose using a headphone which works only with frequencies above 80Hz? [closed]

I don't mean like... voice messages, but, music! Specially blues, metal and rock which tend to have lower pitch tones.
2
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1answer
105 views

Purely Mechanical Acoustic Frequency Converter

I'm an electrical guy, so I know how to make a frequency converter electrically. Or by using software through resampling, etc. My mechanical understanding of the world is much more lacking. What I'm ...
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2answers
548 views

Programming a Vectorscope

I'm currently attempting to create a vectorscope that analyzes realtime audio in Javascript using the Web Audio API. During every cycle, the API allows access to the current frequency data and time ...
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2answers
227 views

Frequency modulation with sound instead of radio waves

I would like to be able to hear a simulation of what the actual radio waves sound like, should I be able to hear them directly. I understand the math of frequency modulation, and am willing to make ...
0
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1answer
47 views

What's the name for the type of x-axis scale used in frequency graphs?

I'm talking about the way the spacing between frequencies typically shrinks as the x-axis increases on frequency graphs. For example, in the graph below, the leftmost (labelled) x-axis interval ...
0
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1answer
371 views

Sync audio -Harmonics of sync (not frequency)

I'm clocking in some freebie hours, re-aligning audio for a project that was butchered with plural eyes program and I'm seeing patterns of sync that remind of of the harmonics after a Fundamental ...
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3answers
1k views

Why can I hear 120 BPM, but not 2 Hz?

What is the difference between BPM (Beats Per Minute, like what a DJ counts to mix) and Hz (Hertz, like what tuning forks are measured in), other than a factor of 60? Why can I hear a 60 BPM bass ...
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1answer
58 views

Automatic EQ creation to get similar frequence response from two sources?

Is there some kind of plugin / tool (preferably ladspa, lv2 or at least open source) to compare two recordings of an identical source, done with two different mics & recorders and create an ...
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2answers
76 views

What property of sound disturbs us?

I am not sure if here is the right place to ask my question. But I will ask. I want to build some kind of sound detector circuit to prevent sleeping baby from disturbances. But, it should detect ...
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2answers
63 views

How can I avoid the pop at the end of a file containing a pure frequency?

For a personal project, I need to generate a track that contains a single, pure frequency. My method for this involves generating a single tone using Audacity, and exporting the file. The wave ...
4
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5answers
2k views

Completely cut frequencies below a certain threshold

I'm warming up to Ableton Live by attempting to manipulate songs into how various animals would hear them. For example, idealized bats hear roughly between octave 7, starting at 1.28kHz, to octave 13,...
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1answer
970 views

Frequency distribution graphs in music

I'm quite a newb when it comes to anything audio-related but am playing with programming a spectrum-visualiser. I chunked the signal into 50 bars, each representing another frequency-band. One thing ...
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2answers
191 views

What frequencies does the master volume increase?

If standard eq knobs on a stereo boost or cut the amplitude of specific frequencies does the volume knob adjust the amplitude of all possible frequencies? Is there a range of frequencies different ...
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3answers
258 views

From simple to advanced mix techniques

In a few words, I know how to mix a fairly simple track (drums, bass, guitar, vocals...). This means that I know how to blend things together because each "instrument" is quite easy to isolate in ...
1
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1answer
114 views

How to calculate our hearing frequency

If we have an object which produces sound with approx. 120 kHz (i.e. bat). And let's say that we record this sound with sample rate of 44,1 kHz (assuming that we do not know about Nyquist theorem). ...
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4answers
3k views

Formula for the sound pressure of a pure tone

What is the formula for the sound pressure of a pure tone of 500Hz, ex-pressed as a function of time?