28 Royalty-Free Audio Tracks for "Frequency Sweeps"

Siren effect with digitally controlled frequency sweep using 96khz crystal controlled oscillator, 8-bit binary counters set up as a variable frequency divider. I added slight reverb.

Very strange sounds from a very high frequency.

Radio motorola.

Created in labchirp using a noise and frequency up.

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.

Playing around with the excellent tuner at http://websdr. Ewi. Utwente. Nl:8901/. The website even has a recording button! this version is the same as "shortwave-sweep-and-beeps. Wav" except here i have limited it with a threshold of 10db, which decreases dynamic range but also makes it louder overall.

Test of how uoki-toki polivoks vcf handles sin-wave (ca 270hz) when the filter is self-oscillating. I bring the uoki-toki polivoks vcf to self-oscillation and tune the vcf to ca 270hz too. I let the lfo sweep the frequency. Cv1 pot at ca 100%. Hmmm interesting. . . .

Don’t know if my english is correct. . . Butt i guess you get it, dear reader. Test of how uoki-toki polivoks vcf handles sin-wave (ca 270hz) when the filter is self-oscillating. I bring the uoki-toki polivoks vcf to self-oscillation and tune the vcf to ca 270hz too. I let the lfo sweep the frequency. Cv1 pot at ca 70%. What happens. . .

Warning! loud noise! this sound is not intended to listen to, but to do technical measurements!. This is a test recording i made to measure my headphone's frequency response. It plays a nice "left" and "right" to determine the channels. Then it plays back white noise first in both channels, then one at a time. Then the same with sine sweeps. Then short impulses.

Lofi radio sound recorded with 3 eur cheap radio unit. Recorded with tascam dr-22wl. ---in case you use any of my sounds, i will be happy to be informed, although it is not necessary. Recorded in 2018.

Upward frequency sweep.

A harsh digital frequency sweep.

A high-frequency electronic discord tone (sweeping from very high to high) suitable for ringtones and annoying dogs.

Cicadas from hell. 6 pulse waves (cwejman vco-2rm, two audio frequency generators, and instruo cs-l), frequency/filter sweep modulated by e350 morphing terrarium. Overall frequency shifting by an e520 hyperion effects processor.

Heavy kick with a low frequency slide. Classic dance music phrasing fx for chorus to build/break transitions. [format: wav][license: cc 0].

This is a recording of myself sleeping, beginning ~ 1:00 am local time (~ 3hrs after going to bed) on january 10th, 2020 (which i later discovered was a full moon). I was in the midst of experimenting with recording myself all night long out of curiosity, using a laptop placed near the head of my bed. This particular recording was the only anomalous one (the rest consisting mostly of just breathing or snoring with occasional sleep-talking). This ~2 hour recording has several interesting properties, which make it hard for me to believe that these sounds were actually going on while i was sleeping. On the other hand, i don't have a memory of editing this file if i did. Either way, i find it unsettling. I found the file in oct 2021 while organizing my samples. As far as i can remember, this is the original raw recording. On further inspection, i discovered that it has some additional peculiar properties that make it even harder to believe i could have made it without remembering doing so. The audio spans almost exactly 118min (7080s). There’s a frequency sweep with a cycle-length of 6480ms that repeats throughout the entire recording. Dividing the 118min by 6. 48min (60 cycles) results in 18 parts containing exactly 60 cycles and a remainder of 12 cycles. If you think you know the source of the strange sounds or if you've ever heard anything similar, please let me know in the comments or email me at storyofthelie@protonmail. Com. I collected the most interesting bits into this pack:https://freesound. Org/people/storyofthelie/packs/33653/. Approximate times of weird stuff:. 25min - stretched cough41min - voice & sounds45min - metal hit & voice47min - call response55min - door latch1hr 3min - portal1hr 7min - more portal1hr 11min - open portal1hr 20min - echo voice1hr 23min - echo voice, tones, portal1hr 36min - stomp into breathing1hr 51min - echo voice1hr 53min - cycle tone change into crazy.

A high-frequency electronic discord tone (sweeping around high frequencies) suitable for ringtones and annoying dogs. Also suitable as a sound effect for 'sweeping the dial' on shortwave radio.

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.

Sound of a high speed train leaving lleida station. A kind of glissando or frequency sweep is produced when the train increases his speed.

I made this as a strange wake-up alarm. I was wondering at what point i will wake-up? what frequency will break my dream and bring me back on earth?. Created using audacity.

An e50 morphing terrarium (digital) applying slow sweep filter/freq modulation of 8 voices. Cwejman vco-2rm (analog), synthesis technology e340 cloud generator (digital), and two lifewire audio frequency generators (analog). Mannequins three sisters vcf.

Right channel the sin-wave. Left channel the output from uoki-toki polivoks vcf when i manually sweep the filter frequency. Resonance at max.

Frequency sweep generated in audacity, then added some effects in wavepad. This sound would fit well for end of the world sirens or something. Enjoy!.

Electromagnetic, electronic, electricity, electric, energy, interference, digital, digital elements, technology, computer, experimental, noise, voltage, interference, static, hum, buzz, buzzing, buzzes, beep, beeping, dot, dit, morse, morse code, geiger counter, radiation, sweep, frequency, science fiction, sci-fi, futuristic, future, robotic, robot.

A synth chord i placed in fl studio. C a f c. Using a saw square and pulse pwm wave for combo. Then put a sweeping band pass filter from top frequency to bottom frequency. Then i put a panner with the speed lfo sweeping from fast to slow. Next the right amount of reverb. Finally some copmression and normalizing. Using sound to reach out to angels.

I like to listen to static (often actually) and it actually shifts a lot through out the day. So i heard some cool ringy stuff. . & decided to sweep through the am band. . . And actually touching the screen of my cell made the static louder. Sounds like a synth.

Using a variety of 1980s radios connected via a headphone output to the computer, i tuned in - across the entire bandwidth - of the mw and lw channels. I also captured the static hiss of those bands, 'dead air'. There are small clips of various stations along the way but i was looking for that 'tuning in' sound that was so familiar when radio was the central part of every teenager's life.

Layered synthesis of the sound of a big hit. 1 layer. Recorded sound of a blow to the pillow (take with a percussion tint)2 layer. Recorded sound of a blow to the pillow (double low kick)3 layer. Recorded sound of a blow to the pillow (variation of a low-kick double with a low pitch and a different attack phase)4 layer. The sound of a low-frequency sweep, like in a synthetic bass drum, obtained on a synthesizer. )an additional layer of metal impact (recorded by me) is not present in all variations of the sound presented. Each layer was subjected to quite extreme compression and equalization. A bit of overdrive is present. Well, convolutional reverb.