diff options
Diffstat (limited to 'fft_mouth.py')
| -rw-r--r-- | fft_mouth.py | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/fft_mouth.py b/fft_mouth.py deleted file mode 100644 index 1fae0cf..0000000 --- a/fft_mouth.py +++ /dev/null @@ -1,121 +0,0 @@ -# Speak.activity -# A simple front end to the espeak text-to-speech engine on the XO laptop -# http://wiki.laptop.org/go/Speak -# -# Copyright (C) 2008 Joshua Minor -# This file is part of Speak.activity -# -# Parts of Speak.activity are based on code from Measure.activity -# Copyright (C) 2007 Arjun Sarwal - arjun@laptop.org -# -# Speak.activity is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# Speak.activity is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with Speak.activity. If not, see <http://www.gnu.org/licenses/>. - -# This code is a stripped down version of the fft view from Measure - -from mouth import * - -# Newer OLPC builds (and Fedora) have numpy instead of numeric: -try: - from numpy.oldnumeric import ceil - from numpy.fft import * -except: - from Numeric import ceil - from FFT import * - - -class FFTMouth(Mouth): - def __init__(self, audioSource, fill_color): - - Mouth.__init__(self, audioSource, fill_color) - - self.peaks = [] - - self.y_mag = 1.7 - self.freq_range = 70 - self.draw_interval = 1 - self.num_of_points = 105 - - self.stop = False - - #constant to multiply with self.param2 while scaling values - self.y_mag_bias_multiplier = 1 - - self.fftx = [] - - self.scaleX = "10" - self.scaleY = "10" - - def processBuffer(self, rect): - self.param1 = rect.height / 65536.0 - self.param2 = rect.height / 2.0 - - if(self.stop == False): - - Fs = 48000 - nfft = 65536 - self.newest_buffer = self.newest_buffer[0:256] - self.fftx = fft(self.newest_buffer, 256, -1) - - self.fftx = self.fftx[0:self.freq_range * 2] - self.draw_interval = rect.width / (self.freq_range * 2.) - - NumUniquePts = ceil((nfft + 1) / 2) - self.buffers = abs(self.fftx) * 0.02 - self.y_mag_bias_multiplier = 0.1 - self.scaleX = "hz" - self.scaleY = "" - - if(len(self.buffers) == 0): - return False - - # Scaling the values - val = [] - for i in self.buffers: - temp_val_float = float(self.param1 * i * self.y_mag) +\ - self.y_mag_bias_multiplier * self.param2 - - if(temp_val_float >= rect.height): - temp_val_float = rect.height - 25 - if(temp_val_float <= 0): - temp_val_float = 25 - val.append(temp_val_float) - - self.peaks = val - - def do_draw(self, context): - rect = self.get_allocation() - - self.processBuffer(rect) - - # background - context.set_source_rgba(*self.fill_color.get_rgba()) - context.paint() - - # Draw the waveform - context.set_line_width(min(rect.height / 10.0, 10)) - context.set_source_rgb(0, 0, 0) - count = 0 - for peak in self.peaks: - context.line_to(rect.width / 2 + count, - rect.height / 2 - peak) - count += self.draw_interval - context.stroke() - count = 0 - for peak in self.peaks: - context.line_to(rect.width / 2 - count, - rect.height / 2 - peak) - count += self.draw_interval - context.stroke() - - return True |