File:Sinc.wav
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Sinc.wav (WAV audio file, length 3.0 s, 1.41 Mbps overall, file size: 517 KB)
File information
Structured data
Captions
Summary[edit]
DescriptionSinc.wav |
English: A three-second fragment of the sinc function as audio (three seconds at 44100 Hz; Blackman window applied; frequency 2000 Hz).
Generated by the following Python code. import math import wave import struct # The sinc function. def sinc(x): return math.sin(x) / x if not x == 0.0 else 1.0 # The Blackman window. def blackman(length, i): t = i / (length - 1) return 0.42 - 0.5 * math.cos(t * math.pi * 2.0) + 0.08 * math.cos(t * math.pi * 4.0) # Windowed-sinc function. def windowed_sinc(length, frequency): output = [] for i in range(length): sinc_phase = i - (length - 1) / 2 output.append(sinc(sinc_phase * frequency * math.pi * 2.0) * blackman(length, i)) return output SAMPLE_RATE = 44100 DURATION = 3 FREQUENCY = 2000.0 with wave.open("sinc.wav", "w") as wavfile: wavfile.setnchannels(2) wavfile.setsampwidth(2) wavfile.setframerate(SAMPLE_RATE) for sample in windowed_sinc(SAMPLE_RATE * DURATION, FREQUENCY / SAMPLE_RATE): wavfile.writeframes(struct.pack("<h", int(sample * 32767)) * 2) |
Date | |
Source | Own work |
Author | SopaXorzTaker |
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 14:53, 12 September 2020 | 3.0 s (517 KB) | SopaXorzTaker (talk | contribs) | Cross-wiki upload from en.wikipedia.org |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Transcode status
Update transcode statusFormat | Bitrate | Download | Status | Encode time |
---|---|---|---|---|
MP3 | 40 kbps | Completed 14:53, 12 September 2020 | 1.0 s | |
Ogg Vorbis | 33 kbps | Completed 14:53, 12 September 2020 | 1.0 s |
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
- Usage on zh.wikipedia.org
Hidden categories: