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Adding a metronome sound before line each recording #210

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Adding a metronome sound before line each recording #210

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17 changes: 16 additions & 1 deletion muselsl/record.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,9 +11,11 @@
from .muse import Muse
from .constants import LSL_SCAN_TIMEOUT, LSL_EEG_CHUNK, LSL_PPG_CHUNK, LSL_ACC_CHUNK, LSL_GYRO_CHUNK

import time
from time import sleep
import pygame
# Records a fixed duration of EEG data from an LSL stream into a CSV file


def record(
duration: int,
filename=None,
Expand Down Expand Up @@ -69,20 +71,30 @@ def record(
res = []
timestamps = []
markers = []
blinkOrNot = []
t_init = time()
time_correction = inlet.time_correction()
last_written_timestamp = None
print('Start recording at time t=%.3f' % t_init)
print('Time correction: ', time_correction)

pygame.mixer.init()
metronome_sound = pygame.mixer.Sound('metronome_click.wav')

while (time() - t_init) < duration:
try:
metronome_sound.play()
print("Blink now!")

data, timestamp = inlet.pull_chunk(
timeout=1.0, max_samples=chunk_length)

if timestamp:
res.append(data)
timestamps.extend(timestamp)
tr = time()


if inlet_marker:
marker, timestamp = inlet_marker.pull_sample(timeout=0.0)
if timestamp:
Expand All @@ -103,8 +115,11 @@ def record(
)
last_written_timestamp = timestamps[-1]


except KeyboardInterrupt:
break



time_correction = inlet.time_correction()
print("Time correction: ", time_correction)
Expand Down