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2. File:United States Frequency Allocations Chart 2016 - The ...

   en.wikipedia.org/wiki/File:United_States...

   This image or file is a work of a United States Department of Commerce employee, taken or made as part of that person's official duties. As a work of the U.S. federal government , the image is in the public domain .

3. Envelope (waves) - Wikipedia

   en.wikipedia.org/wiki/Envelope_(waves)

   In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its extremes. [1] The envelope thus generalizes the concept of a constant amplitude into an instantaneous amplitude. The figure illustrates a modulated sine wave varying between an upper envelope and a lower envelope. The envelope function may be a ...

4. Envelope (music) - Wikipedia

   en.wikipedia.org/wiki/Envelope_(music)

   The delay setting determines the length of silence between hitting a note and the attack. Some software synthesizers, such as Image-Line's 3xOSC (included with their DAW FL Studio) have DAHDSR (delay, attack, hold, decay, sustain, release) envelopes. A common feature on many synthesizers is an AD envelope (attack and decay only).

5. File:United States Frequency Allocations Chart 2011 - The ...

   en.wikipedia.org/wiki/File:United_States...

   Note: Information in the chart has been superseded by the information in File:United States Frequency Allocations Chart 2016 - The Radio Spectrum.pdf, which was downloaded from the US Department of Commerce web site and archived at archive.org.

6. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   an Office suite; allows to export (and import, with accuracy limitations) PDF files. Microsoft Word 2013: Proprietary: Desktop software. The 2013 edition of Office allows PDF files to be converted into a format that can be edited. Nitro PDF Reader: Trialware: Text highlighting, draw lines and measure distances in PDF files. Nitro PDF Pro ...

7. Temporal envelope and fine structure - Wikipedia

   en.wikipedia.org/wiki/Temporal_envelope_and_fine...

   These filter outputs are similar to the waveforms that would be observed at places on the basilar membrane tuned to 364, 1498 and 4803 Hz. For each centre frequency, the signal can be considered as a slowly-varying envelope (E BM) imposed on a more rapid temporal fine structure (TFS BM). The envelope for each band signal is shown by the thick line.

8. List of sound chips - Wikipedia

   en.wikipedia.org/wiki/List_of_sound_chips

   Atari 8-bit, Atari 5200, some Atari arcade machines, certain Atari 7800 cartridges [2] Atari AMY: 1983 64/8 Intended for 65XEM (never released) HMOS (depletion mode NMOS) chip, additive synthesis chip (64 oscillators, 8 frequency ramps) [3] Atari MIKEY: 1989 4 For the Atari Lynx Combined sound and LCD driver, has 4-channels with an 8-bit DAC

9. Yamaha OPL - Wikipedia

   en.wikipedia.org/wiki/Yamaha_OPL

   Frequency multiply (can be set to 1 ⁄ 2, 1 to 10, 12 or 15) Waveform (Sine) Volume (0–63, logarithmic) Attack, decay, sustain, release (4 bits each, logarithmic) Tremolo (on or off) Vibrato (on or off) Sustain (on or off) Envelope scaling per key (on or off) Volume scaling per key (0–3) There are also a few parameters that can be set for ...