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cwstudio(1) cwstudio(1) NAME cwstudio - lightweight and portable CW signals generator with Curses UI SYNOPSIS cwstudio [--play] [--noplay] [--silent] [--verbose] [--groups] [--words] [--calls] [--agc 0-100] [--bits bits] [--click 0-100] [--chars nchars] [--charset charset] [--cspaces 0-100] [--dashlen 100-10000] [--detune 0-100] [--even 0-100] [--freq 50-4000] [--number 1-100] [--hand 0-100] [--highcut 300-10000] [--hum 0-100] [--lowcut 50-1000] [--noise 0-100] [--odd 0-100] [--output outfile] [--qsb 0-100] [--samplerate samplerate] [--seed 1-32767] [--shape -10 - 10] [--signals 1-5] [--spacelen 20-300] [--sweep -4000 - 4000] [--sweepness 0 - 10000] [--tempo 5-500] [--window 0-1000] [--wordset 0-1000] [--wspaces 0-100] DESCRIPTION Curses-based CW signal generator. F1 shows help in interactive mode. In batch mode (--noplay), senerates 1-5 mixed CW signals of various proper- ties, adds optional noise and saves it to a WAV file. If compiled on proper environment, it can play the result. Command line parameters are also in- terpreted in interactive mode! In batch mode all text output is written to stderr; if stdout is redi- rected, the created file is written here. If stdin is redirected, the gen- erated text is taken from it. Optional CWPARAM environment variable can be set to hold some parameters, for example CWPARAM="--even 10 --odd 10". OPTIONS --play --noplay Play the result (default), otherwise only save the WAV file. --silent --verbose Verbose mode gives full output (default), silent mode presents only generated text. --groups --words --calls The "groups" mode generates random five-letter groups. The "words" mode generates most common English words. The "calls" mode generates real amateur callsigns. --agc 0-100 Simulate AGC response of receiver by varying noise volume along RMS of the signal. Default is 100. --bits bits Set bitrate. Default is 16. --click 0-100 Simulate click by lowering sustain part of tone at given level (in dB) below attack phase. Default is 1 dB. --chars nchars Take first "nchars" from default charset in "groups" mode. --charset charset Set customized charset for random group generation in "groups" mode. --cspaces 0-100 Set additional spaces (one space has a length of a dot) between chars. Default is 0. --dashlen 100-1000 Length of dash, in percentage of dot. Default is 300% (3:1). --detune 0-100 Simulate frequency drift of the signal. Default is 0. --even 0-100 Enhance the signal by given percent of even harmonics. Default is 0. Values 0-5 are most valuable in practice. --freq 50-4000 Use given frequency in Hz.. --number 1-100 Generate given number of groups/words/calls. Default is 20. --hand 0-100 Simulate hand transmitting by introduce random errors in dash/dot lengths. --highcut 300-10000 Set high cutoff frequency (Hz) of generated noise. Default is 2400. --hum 0-100 Add given percentage of 50 Hz mains hum. Default is 0. --lowcut 50-1000 Set low cutoff frequency (Hz) of generated noise. Default is 300. --noise 0-100 Add given percentage of noise. Default is 100. --odd odd Enhance the signal by given percent of odd harmonics. Default is 0. Values 0-5 are most valuable in practice. --output outfile Store the result in a WAV file of given name. Default is output.wav. --qsb 0-100 Add given amount of signal QSB. Default is 0. --samplerate samplerate Set given samplerate. Default is 44100. --seed 0-32767 Set explicitly the seed of random generator. If not set or set to 0, seed is also random generated. Otherwise it is set to given value, resulting in a possibility of repetitive random content generation. --shape -50 - +50 Set the shape of random generated numbers. Positive value increases the fraction of higher numbers (last letters, words, calls). Nega- tive values prefer first ones. Zero means flat uniform distribution. Can be used to increase the number of newly learned letters/words. In practice, values -10 to 10 are well working. --signals 1-5 Generate given number of mixed signals, each of hardcoded frequency ratio, tempo ratio and amplitude ratio. Every signal plays the same text in a loop. Default is 3. --spacelen 20-300 Space length (between dots and dashes) in percentage of dot. Default is 100% (1:1). --sweep -4000 - 4000 Simulate sweep (chirp or filter ringing according to parameters) by starting each tone from given frequency (can be negative, which re- sults in zero crossing). Frequency is then changed exponentially to this given in --freq with a rate given by --sweepness. Default is 0. --sweepness 0-10000 The rate of exponential frequency change from --sweep to --freq. De- fault is 0 (no sweep). --tempo 5-500 Tempo of generated main signal in cpm (chars per minute) according to PARIS group. --window 0-1000 Raised cosine window width (used to avoid clicks in each tone). De- fault is 100 samples. --wordset 0-1000 Take only first given number of most common English words in "words" mode. --wspaces 0-100 Set additional spaces between words/groups/calls. Default is zero. EXIT STATUS CWStudio returns 0 if everything is OK. In the case of error, return value is different. AUTHOR Lukasz Komsta, SP8QED, 2008-2013 April 24, 2013 cwstudio(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | AUTHOR
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