269 Royalty-Free Audio Tracks for "Frequency Modulated"

Field recording,includes frequencies below 21. 4khz very detailed. Equipment behringer ecm 8000mxl genesis fet.

This kind of generates random values at a certain frequency. In this example, the frequency is 200hz. The algorithm for this noise was created two years ago by myself in c++, as an imitation of noise generators in supercollider 2.

Slow flip along a portion of the am radio band using an analog receiver. Static and some talk.

A glitchey riser.

This is a sound made in audacity with a high frequency square wave slowed down. I have a question about this effect that sounds like a robot saying ''uaiuai'' ¿which is the name of this effect?if someone knows the name, please comment.

A soft static hiss from somewhere on the radio dial.

This low rumble was first created to represent an airplane.

Flip across the am radio dial through a range with some high-pitched sing in the static (and intermittent indistinguishable voices).

2 oscilators. One panned to the left the other to the right. Random pitch lfo bent on different rate speeds. With a bit cusher set to a certain amount, and mix to give both the crush and the original.

A series of wok hits, lowered into water. Gives an acoustic sounding dizziness and frequency shift. Could be good for comic style animation or theatre.

Sonido echo para llamar atención ya que es disonante, como las uñas sobre un tablero.

Spooky ∴ ambient ∔ drone.

A close recording of a ringing ride cymbal. Useful as a drone or feedback-like ringing. All my sounds are fully free to use, but please consider leaving a comment to let me know how you'll be using them. Just curious! :).

3 recordings of various rfis made by refreshing the radio signal on myphone and putting it close to my microphone. First sound however, was coming from my electric piano, because my phone was on top of it.

Static from the 810 khz frequency of the am radio band recorded from a digital receiver. Has a sort of submarine suggestive hollow quality.

This sound is an audio file that slowly breaks up the further it is played. I recorded this with an in-built microphone, no idea what make though. I recorded this on audacity, and added gradual distortion. Warning: you may need to turn down the volume for the last 6 seconds!.

A very high pitch noise from ddlc.

Just radio empty frequency.

Just radio empty frequency.

Just radio empty frequency.

I legit took this guy sound and edited https://freesound. Org/people/klangmaler_lutz/sounds/459795/give all credit to him.

This kind of noise randomly generates the values -1 or +1 at a given rate per second. This number is the frequency. In this example the frequency is 100 hz. The algorithm for this noise was created two years ago by myself in c++, as an imitation of noise generators in supercollider 2.

This kind of noise generates sinusoidally interpolated random values at a certain frequency. In this example the frequency is 100hz. The algorithm for this noise was created two years ago by myself in c++, as an imitation of noise generators in supercollider 2.

Recorded in a tram in tokyo. I didn't use high-pass filter when recorded, so i think you can hear much low frequency. Sennheiser mkh20 and fostex fr-2.

The interference produced at the low (left) end of the radio dial on a jambox set up close to a dvd burner while in operation. Sound rises and falls as the burner writes to disc.

This was produced by tapping on a stethoscope which had an earbud pressed against a shure sm57 mic. Low pass filter applied, as well as compression and a gate. Chorus added. Used a recording cassette deck as a preamp going into an m-audio audiophile usb soundcard. Note: if you're having problems listening to this clip, the cutoff frequency of your speaker set may be too high(solution: new speakers). The signal strength exists almost entirely in the very low frequencies, so you may need a sub-woofer to hear it. Otherwise, try turning your speaker volume all the way up. Doing so may saturate the signal and at least allow you to hear the harmonics of the signal caused by the distortion. I don't recommend it, but you'll at least maybe be able to hear something.

Re-edited sound of file 273410. Lowpassfilter / hi-cut above 60 hz and cutted sub frequencies below 60 hz. Postproduction and editing with sony soundforge, 2015.

Radio frequency tuning noises.

Sound of user dobroide modified octave downhttps://www. Freesound. Org/people/dobroide/sounds/19368/.

A recording and manipulation of radio am frequencies.

Static with pops from dead air on a radio station. Starts with a drone which fades from the background.

A very harsh section of static with periodic interference (source unknown) from the far right-hand side of the fm radio dial, at 106. 7 mhz. Recorded from a digital tuner.

A less harsh, almost tickling of static pops from the right-hand side of the fm radio dial, interspersed with harsh interference (source unknown). Recorded from a digital tuner.

High-pitched flip across the am radio dial. Good intro-type recording.

A metal key attached to a magnet with its handle only. The key bounces back and forth, when pulled back and released, and produces a nice metallic sound.

High frequencies repeted sound (sound design in protools).

A simple sine wav with frequency changing according to a parabola.

Static from a radio station wireless remote.

Static from 1010 on the am band of the radio recorded from a digital tuner. The jumbled noise sounds like a harsh wind with an old school chattering satellite chirping away.

Very strange sounds from a very high frequency.

Here is a sound that i produced in audacity by generating a tone and making the frequency very low. It sounds rather like a humming of a machine or electrical appliance! good for looping and such. Enjoy !.

Static from 770 khz on the am radio band, with a cycling sort of zap sound.

A sound made for a project a few years back to sound like the whirring sound of a wind turbine.

Something i accidentally got while messing around with voxal voice changer by nch software. It was a background noise of my mom closing a door, and i decided to put it in reverse and i couldn't help but notice that it sounded like a low "whoosh" transition. So i opened it in wavepad and added echo + reverb and voila.

This is a transformation of the original recording https://freesound. Org/people/pinehadmz/sounds/369501/. For week 10 "musical piece" assignment for the audio signal processing for music applications online class. There are three layers, panned in stereo. Each syllable of each layer was randomly pitch shifted to a note in the minor scale using the harmonic plus stochastic model. Each harmonic track was thickened with extra harmonics during the synthesis process too to make it extra weird.

A wet finger rubbing on the outside edge of a crystal wine glass.

Crackle and popping from an ego one vapor cigarette device.

My heartbeat, recording with low eqing and a shure sm58. There's some moving of a microphone and a little bit of breathing. Towards the end i take a sample of my computer.

Interference is a interesting phenomenon. I blow a bass tone and add my own voice, first i adjust my voice to same wavelength as the instrument, then i change my voice linearily, and you can follow how you get a 3rd tone, which is either a+b or a-b.

These sci-fi synth sweeps were created by manipulating white noise with filter sweeps and other effects and then using noise reduction to remove the underlying white noise. You would need to pick through them and cut them up, but they can be useful for sound designing light graphic elements that move around and animate on and off.