I made this as a near ultrasonic sms signal. Created and edited with audacity, filtered with glame bandpass filter. If you hardly cut a pure tone, you introduce a whole lot of other frequencies to the signal at the cutting point. To avoid this after the cutting you need to filter the whole thing with a bandpass filter to ensure you have as little other frequency content as possible. It will audibly soften the start and the end of the sound. That's what i did here.
The front door knocker (built into a letterbox) of a small house, recorded from the front room (with the front door shut). Various recordings with one, two and three knocks assembled into one file. Recorded with a marantz pmd-661 and edited with audacity, for breaking the code, oxford theatre guild 2011.
Made using yamaha p95 digital piano with organ voice selected with church reverb added in post (recorded through a generic laptop electret mic, sounds good enough nevertheless).
One-shot from versilian studios chamber orchestra 2: community edition sampling project. Co 2: ce is a 3,000-sample public-domain orchestral sample library designed to give composers and producers the tools they need to create realistic and compelling orchestral mockups. To learn more or make a commercial contribution to help keep the project alive, please visit http://vis. Versilstudios. Net/vsco-community. Html. Original filename: trombone_short_a#1_v1_2. Wavinstrument family: brassinstrument: oldtrombonearticulation: shortnote: a#1midi note: 35location: durham, ctroom type: band rehearsal spacemicrophone: 2x sm-57 spaced pairperformer: sam gossner.
Made this sound myself with some visual basic programming. I used it as a ring tone to tell me i have a message. It is a burst of a rtty-like sound. You may want to trim the silent tail.
Shortened a glockenspiel chime by angstrom (https://freesound. Org/people/angstrom/packs/583/) to approx 1 second duration for use in a coding exercise/game.
A sound made in audacity. 500hz tone, lasting 0,5 seconds, 0,5 pause, repeated 4 times, with a bit of reverb. Could be used as some sort of alert or alarm. Loop friendly.