UK artist and sound designer Robert Stevenson is the powerhouse behind Ahrdee, and his amazing Sound Effects keep rolling out and moving into our clients' productions around the world. From thumping heartbeats to bleeping heart monitors, and Sci Fi Red Alerts of aliens on board, to noisy Submarine diving bells, Ahrdee's SFX are a must-have for your ER medical dramas or full-throttle action movies.
A synthesised heartbeat at 139 BPM with whooshing Doppler ultrasound-type effect. A simulation of baby's heartbeat in womb: foetal cardiac ultrasound. It could also be used for the sound of the pulse rushing in any artery not just heart. Humans,
A synthesised heartbeat at 53 BPM with whooshing Doppler ultrasound-type effect. The sound could also be used for the sound of the pulse rushing in any artery not just heart. Humans,
A synthesised heartbeat at 87 BPM with whooshing Doppler ultrasound-type effect. The sound could also be used for the sound of the pulse rushing in any artery not just heart. Humans,
A simulation of a thumping human heartbeat accelerating from 65 bpm to 166 bpm in 48 seconds with a simulated medical monitor (EKG) bleep on each beat. Uses samples of real human heartbeat. Humans,
An alarm sound similar to that used on NASA spacecraft / space-station. Could also be used as aircraft alarm or other alarm, (or novelty ring tone). Science Fiction,
Alarm similar to, but not the same as, Star Trek ‘Red Alert’, (i. e. NOT taken from Star Trek sound track). This alarm sound could be used for any alarm, not necessarily science fiction. Science Fiction,
A loud alarm similar to, but not the same as, the Star Trek ‘Red Alert’ klaxon on the original Star Trek TV series. Note: this is not a sample lifted from a Star Trek sound track, it has been made from scratch, (synthesised), so there is no infringement of "Star Trek" copyright. Foley,
Bleeps like those heard in radio communications with NASA astronauts.
Could also be used for other signals / alerts, e. g. medical monitor beep, or timer countdown. Electronic,
Reverberating computer dink / ding sound played at progressively slower speeds, (i. e. progressively longer duration and deeper pitch). Similar to xylopnone / balafon. Computer,
Countdown from ten to zero by monotone male robot voice with American accent, #1-4. Four versions: slightly different effects applies to each take. Talking, Computers / Male
DTMF telephone tones as if dialling 1-800-555-1234. Tones are repeated twelve times, increasingly quickly. This number has been used in fiction but may not actually be fictional. Ringers Phones,
Made using real human heartbeat, 61 bpm, very bassy, loopable, reverbed. Note: can only be heard properly via speakers which can reproduce low frequencies. Humans,
Three pairs of materialize / de-materialize 'Transporter' sounds, somewhat similar to Star Trek TV series, last pair are deliberately distorted. Science Fiction,
American man counts down from ten to zero, once per second, with intercom effect, and NASA-style tannoy (Public Address) echo effect. Two takes, second take has more echo-reverb. Talking, American / Male
A synthesised, but natural sounding, heartbeat effect accelerating from 73bpm to 200bpm in 65 seconds, with subtle stereo reverberation. NB: this recording can only be heard properly on devices which can reproduce low frequencies. Humans,
A deep synthesised, but natural sounding, heartbeat at approximately 72 BPM, stereo, loopable.
There are very slight variations in the beat frequency to make it sound more natural.
NB: this recording can only be heard properly on devices which can reproduce low frequencies. Humans,
Loud phasing security-type alarm with strong high-frequency content. Similar to "personal attack" alarm or emergency service vehicle. (Loopable). Electronic,
Recreation of "hardware disconnect" from computer sound, e. g. when USB device is removed from computer. Could also be used for other computer alerts. Computer,
Synthesised robotic heartbeat sounds at different speeds and pitches, (progressively slower and deeper). Designed for one beat sound to be selected from this group then looped at the desired rate. Humans,
Simple synthesised click sounds of increasing duration. Initially like dripping water hitting hard surface, then clock-like “tick”, then "snap", then “clack”, and finally a “tock” sound. Multimedia, Click sounds
A simulation of “ringing in ears” sound (tinnitus). Sometimes used after explosion or other loud sound effect. This sound will only be audible on devices which can reproduce high frequency sound. Humans, Annoyance
Simulation of alarm like that indicating leak of hazardous material, (e. g. radioactivity, biohazard, chemical), in a large building, (laboratory, factory, nuclear reactor). Could be used for any danger alarm (or novelty ring tone). Foley,
An accurate simulation of the Greenwich Time Signal, a.k.a. “The Pips” used to mark the hour on BBC radio broadcasts. The six pip time signal is played six times, the takes are increasingly loud. Electronic,
An accurate recreation of the “static” hiss noise as heard on analogue TV or radio, monaural (mono), similar to white noise, loopable. Electronic, White noise
An accurate recreation of the "static" hiss noise as heard on analogue TV or FM radio, (in wide stereo), similar to white noise, loopable. Electronic, White noise
A deep synthesised heartbeat, with an alternate beat effect, speeding up from 60BPM to 138BPM in 60 seconds. Note: this recording can only be heard properly via speakers which can reproduce low frequencies. Humans,
A deep synthesised heartbeat, with an alternate beat effect, speeding up from 66BPM to 184BPM in 34 seconds. Note: this recording can only be heard properly via speakers which can reproduce low frequencies. Humans,
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