Removed obsolete gamma table and updated config file to match

python/config.py

@@ -6,7 +6,7 @@ import os
 N_PIXELS = 60
 """Number of pixels in the LED strip (must match ESP8266 firmware)"""
 
-GAMMA_TABLE_PATH = os.path.join(os.path.dirname(__file__), 'gamma_table_2.npy')
+GAMMA_TABLE_PATH = os.path.join(os.path.dirname(__file__), 'gamma_table.npy')
 """Location of the gamma correction table"""
 
 UDP_IP = '192.168.0.150'
@@ -15,10 +15,11 @@ UDP_IP = '192.168.0.150'
 UDP_PORT = 7777
 """Port number used for socket communication between Python and ESP8266"""
 
-MIC_RATE = 44100
+#MIC_RATE = 44100
+MIC_RATE = 48000
 """Sampling frequency of the microphone in Hz"""
 
-FPS = 75
+FPS = 100
 """Desired LED strip update rate in frames (updates) per second
 
 This is the desired update rate of the LED strip. The actual refresh rate of
@@ -30,39 +31,13 @@ the duration of the short-time Fourier transform. This can negatively affect
 low frequency (bass) response.
 """
 
-MIN_FREQUENCY = 50
+MIN_FREQUENCY = 200
 """Frequencies below this value will be removed during onset detection"""
 
 MAX_FREQUENCY = 14000
 """Frequencies above this value will be removed during onset detection"""
 
-ENERGY_THRESHOLD = 14.0
-"""Energy threshold for determining whether a beat has been detected
-
-One aspect of beat detection is comparing the current energy of a frequency
-subband to the average energy of the subband over some time interval. Beats
-are often associated with large spikes in energy relative to the recent
-average energy.
-
-ENERGY_THRESHOLD is the threshold used to determine if the energy spike is
-sufficiently large to be considered a beat.
-
-For example, if ENERGY_THRESHOLD = 2, then a beat is detected if the current
-frequency subband energy is more than 2 times the recent average energy.
-"""
-
-VARIANCE_THRESHOLD = 0.0
-"""Variance threshold for determining whether a beat has been detected
-
-Beat detection is largely determined by the ENERGY_THRESHOLD, but we can also
-require frequency bands to have a certain minimum variance over some past
-time interval before a beat can be detected.
-
-One downside to using a variance threshold is that it is an absolute threshold
-which is affected by the current volume.
-"""
-
-N_SUBBANDS = 10  # 240 #48
+N_SUBBANDS = 30  # 240 #48
 """Number of frequency bins to use for beat detection
 
 More subbands improve beat detection sensitivity but it may become more
@@ -72,29 +47,10 @@ Fewer subbands reduces signal processing time at the expense of beat detection
 sensitivity.
 """
 
-N_HISTORY = int(0.8 * FPS)
-"""Number of previous samples to consider when doing beat detection
-
-Beats are detected by comparing the most recent audio recording to a collection
-of previous audio recordings. This is the number of previous audio recordings
-to consider when doing beat detection.
-
-For example, setting N_HISTORY = int(1.0 * config.FPS) means that one second
-of previous audio recordings will be used for beat detection.
-
-Smaller values reduces signal processing time but values too small may reduce
-beat detection accuracy. Larger values increase signal processing time and
-values too large can also reduce beat detection accuracy. Roughly one second
-of previous data tends to work well.
-"""
-
 GAMMA_CORRECTION = True
 """Whether to correct LED brightness for nonlinear brightness perception"""
 
-N_CURVES = 1
-"""Number of curves to plot in the visualization window"""
-
-N_ROLLING_HISTORY = 10
+N_ROLLING_HISTORY = 2
 """Number of past audio frames to include in the rolling window"""
 
 MIN_VOLUME_THRESHOLD = 1e-7