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's productions around the world. From thumping heart beats 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,
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,
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,
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,
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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