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British Library Archival Sound Recordings

Explore 44,900 selected recordings of music, spoken word, and human and natural environments

how to build a Spy Transmitter



This simple 2 transistor audio transmitter will send the sounds picked up in a room to any FM radio tuned to the same frequency as the transmitter, somewhere between 80 and 100 Megahertz.

UNSHACKLED!


Since 1950, Pacific Garden Mission has produced this unique series, making "UNSHACKLED!" the longest-running radio drama in history. Still produced in the style of the "Golden Age" of radio, every element is live at the time of the production — the original music, the creative sound effects and, of course, the dynamic performances of talented professional actors.

Listening to the Deep Ocean

LIDO (Listening to the Deep Ocean environment) proposes to establish a first nucleus of a regional network of multidisciplinary seafloor observatories contributing to the coordination of high quality research in the ESONET NoE by allowing the long-term monitoring of Geohazards and Marine Ambient Noise in the Mediterranean Sea and the adjacent Atlantic waters. Specific activities are addressed by long-term monitoring of earthquakes and tsunamis and the characterisation of ambient noise induced by marine mammals (Bioacoustics) and anthropogenic noise.