To make 8D audio, place the song on a circle around the listener and move it slowly, about one full turn every 6 to 10 seconds, using HRTF (head-related transfer function) panning so each ear hears its own version of the sound. Add a little reverb (around 20%) for a sense of space, and listen on headphones, because the effect depends on each ear getting a different signal. In a browser you can do all of this in about a minute without installing anything.
This guide covers how 8D audio actually works, what we measured when we ran the effect, the rotation speeds that line up with a song's bars, and what to check when 8D audio does not seem to work.
Photo by Ilias Chebbi on Unsplash
What is 8D audio?
8D audio is a song processed so that it seems to circle around your head when you listen on headphones. There are no eight dimensions: as one speaker told AVIXA, "There are no 8 dimensions", and the name is a label for an internet trend built on panning, reverb and timing effects.
Under the label, there are two very different ways to make it:
- Auto-pan: the volume swings from the left ear to the right ear and back. It is cheap and works anywhere, but the sound moves along a line through your head rather than around it.
- HRTF panning: the sound is filtered the way your head and outer ears would filter a real source at each angle, with the right level difference, time delay and tone for each ear. The head-related transfer function is a model of that filtering. This is the more convincing method, and it is what browser audio engines use when you set a PannerNode to its
HRTFpanning model.
How do you make 8D audio step by step?
On SearchSound.cloud you can make 8D audio with the free 8D audio converter, which runs in your browser, so the song is never uploaded. The steps:
- Put on headphones or earbuds before you start. You need them to judge the effect, since speakers blend the two channels together.
- Open the 8D audio converter and drop in your file. MP3, WAV, FLAC, M4A, AAC and OGG files all open.
- Press play and listen to the default. The preset turns once every 8.0 seconds with 20% reverb and a 2.5 second reverb length.
- Set the rotation speed. The slider shows the time per turn, from 2.0 seconds at its fastest. Use the table in the next section to match the turn to the song's bars.
- Adjust the reverb amount. 10% to 30% adds depth. Much more and the vocals start to sound distant and washed out.
- Download as MP3, WAV or FLAC. The export runs the same audio graph as the preview, so the file sounds like what you heard.
If you work in a DAW instead, the same idea applies: put the track on a binaural or spatial panner, automate the azimuth through a full 360 degrees, and add a short room reverb. Simple left-to-right auto-pan plugins will give you the "through the head" version described above, not a circle.
What rotation speed is best for 8D audio?
Start at one turn every 6 to 10 seconds. Faster than about 4 seconds feels busy and can be dizzying; slower than about 12 seconds is easy to miss. The circle sounds most natural when it lines up with the music, for example one full turn every 4 bars, so it is worth knowing your song's tempo. If you don't know it, the BPM and key finder detects it from the file.
In 4/4 time one bar lasts 240 ÷ BPM seconds. We computed the time per turn for common tempos:
| Song tempo | One bar | One turn every 4 bars | One turn every 2 bars |
|---|---|---|---|
| 70 BPM | 3.4 s | 13.7 s | 6.9 s |
| 80 BPM | 3.0 s | 12.0 s | 6.0 s |
| 90 BPM | 2.7 s | 10.7 s | 5.3 s |
| 100 BPM | 2.4 s | 9.6 s | 4.8 s |
| 120 BPM | 2.0 s | 8.0 s | 4.0 s |
| 128 BPM | 1.9 s | 7.5 s | 3.8 s |
| 140 BPM | 1.7 s | 6.9 s | 3.4 s |
| 170 BPM | 1.4 s | 5.6 s | 2.8 s |
A simple rule from the table: at 90 BPM or slower use one turn every 2 bars, and for faster songs use one turn every 4 bars. Both keep you inside a comfortable range of roughly 5 to 10 seconds. The converter's default of 8.0 seconds is exactly 4 bars at 120 BPM. If the slider can't hit the exact value, pick the closest one; a small difference only drifts slowly against the beat.
How does 8D audio trick your brain?
Your brain locates sounds mainly from two differences between the ears: the interaural time difference (the sound reaches the nearer ear first) and the interaural level difference (your head shadows the far ear). According to the duplex theory, timing dominates for low frequencies and level for high frequencies, because the head blocks short high-frequency waves much more than long low ones.
To see what an 8D effect actually feeds each ear, we rendered noise through the same Web Audio HRTF panner that the SearchSound.cloud converter uses, in Chromium, with the source 1 metre away at each angle, and measured both ears.
| Source position | Level difference (near ear louder) | Time difference | Level on a mono speaker |
|---|---|---|---|
| In front (0°) | 0 dB | 0 ms | 0 dB (reference) |
| 30° to the right | 9.9 dB | 0.27 ms | -1.1 dB |
| 60° to the right | 11.1 dB | 0.50 ms | -3.4 dB |
| Right side (90°) | 12.2 dB | 0.75 ms | -2.1 dB |
| 120° (behind, right) | 11.2 dB | 0.52 ms | -4.8 dB |
| 150° (behind, right) | 6.3 dB | 0.25 ms | -6.2 dB |
| Directly behind (180°) | 0 dB | 0 ms | -4.0 dB |
Three things stand out:
- The level difference depends heavily on frequency. At 90° we measured only 3.5 dB below 500 Hz but 22.9 dB above 4 kHz. That is the duplex theory in numbers: bass barely moves between the ears, while hi-hats and vocal sibilance swing strongly. Bass-heavy songs therefore sound less "8D" than bright ones.
- The 0.75 ms delay at the side is in the human range. Wikipedia's sound localization article gives 626 microseconds for an ear distance of 21.5 cm; real heads vary.
- Front and back look identical. At 0° and 180° both differences are zero, and the time difference at 30° in front (0.27 ms) is almost the same as at 150° behind (0.25 ms). Only the subtler tone changes from the outer ear tell front from back, which is why the front and back of an 8D circle are easier to confuse than the sides.
Why is 8D audio not working?
If the song does not seem to move, the cause is almost always that both ears are getting the same signal. Check these in order:
- You are on speakers. Speakers send both channels to both ears. In our measurements, a mono speaker turns the whole circle into a volume wobble of about 6 dB (last column of the table above), with no sense of direction.
- Mono audio is switched on. This accessibility setting mixes left and right together. On iPhone it is under Settings, Accessibility, Audio & Visual, Mono Audio (Apple's guide). On most Android phones it is under Settings, Accessibility, Audio adjustment (AbilityNet's Android guide). On Windows 11 it is under Settings, Accessibility, Audio (AbilityNet's Windows guide).
- One earbud is missing or the balance is off. With one earbud in, or a balance slider pushed to one side, you lose one of the two signals the effect relies on.
- The song itself is a weak candidate. Very bass-heavy or very dense mixes move less, as the frequency measurement above shows. Songs with a clear vocal and bright percussion show the effect best.
- The rotation is too slow or too fast. Try one turn every 6 to 10 seconds before judging the result.
A mono source file is not a problem. In our test a single-channel file produced the full 12 dB and 0.75 ms differences, because the HRTF panner creates the two ear signals itself.
Photo by Maddy on Unsplash
What is the difference between 8D audio, spatial audio and Dolby Atmos?
8D audio is one finished stereo file with a movement effect baked in. Spatial audio and Dolby Atmos keep sounds separate until playback, so they can place each element independently.
| 8D audio | Dolby Atmos | Apple Spatial Audio with head tracking | |
|---|---|---|---|
| What it is | An effect applied to a whole song | A format where mixers place individual sounds in 3D | Apple's playback of spatial content on AirPods and Beats |
| What moves | The entire mix, along one circle | Each sound, wherever the mixer puts it | The scene stays fixed while your head turns |
| Needs | Any headphones, any player | Atmos mixes and a compatible service or device | Supported AirPods and Apple devices |
| You can make it from | Any song, in a minute | A multitrack session | Content released in a spatial format |
Dolby describes Atmos as letting creators "place each sound exactly where they want it to go". Apple's Spatial Audio settings offer Off, Fixed and Head Tracked modes, where head tracking keeps sound anchored as you move your head. An 8D file can't do either: every instrument travels together, and the circle turns with your head because it is fixed to the headphones. For designing true 3D audio scenes, the VR spatial audio guide covers HRTFs, binaural rendering and ambisonics.
Where can you find 8D songs?
On SearchSound.cloud you can search SoundCloud for "8D audio" and filter by genre, BPM and upload date, which is handy for finding relaxed 8D edits for studying or fast ones for the gym. If you plan to upload your own 8D edit of someone else's song, the same copyright rules apply as for other edits; the nightcore guide explains why a modified copy is still the original owner's recording. For calm listening, 8D pairs well with the slower settings in the slowed and reverb maker, and the meditation soundscape guide covers what makes background audio relaxing.
FAQ
Do you need headphones for 8D audio?
Yes. The effect works by sending each ear a different signal, and speakers mix the two channels before they reach you. On a single speaker our measurements show the circle reduced to a loudness change of about 6 dB with no direction.
Is 8D audio bad for you?
There is no good evidence that the effect itself harms hearing; the risk is the same as with any music on headphones, which is volume. The WHO-ITU safe listening standard uses 80 dB for 40 hours a week as the adult reference. If the motion makes you dizzy, slow the rotation down to 10 seconds or more per turn.
Is 8D audio the same as binaural audio?
Not quite. Binaural audio is any recording or rendering made for two ears, such as a dummy-head recording. 8D audio is one specific binaural effect: a whole song rendered moving in a circle.
Can you make 8D audio from a mono file?
Yes. An HRTF panner takes a single channel and creates the left and right ear signals itself. In our test a mono file showed the same 12 dB level difference and 0.75 ms delay at the side as you would expect from a real source.
Does the 8D audio converter upload my song?
No. The SearchSound.cloud 8D audio converter processes the file in your browser and never sends it to a server. You can download the result as MP3, WAV or FLAC.