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play.py: 3-row braille spectrum — 12 levels of vertical resolution

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Each frequency band maps to 0-12 height across 3 rows of braille.
Top row shows peaks only, bottom row shows everything.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kenneth Reitz
2026-04-04 01:33:39 -04:00
parent 387fcfb3d7
commit c43156e40b
1 changed files with 33 additions and 18 deletions
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play.py
+33 -18
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@@ -288,7 +288,9 @@ def play_audio(buf, sample_rate, title="", info_lines=None, offset_sec=0.0):
if info_lines:
for line in info_lines:
print(f" {line}")
print() # scope line
print() # scope row 1
print() # scope row 2
print() # scope row 3
print() # blank
print(" [+/f] +5s [-/s] -5s [d] +30s [a] -30s [space] pause [n] next [p] prev [q] quit")
print() # progress line
@@ -324,6 +326,7 @@ def play_audio(buf, sample_rate, title="", info_lines=None, offset_sec=0.0):
import numpy as np
scope_w = 48
bars = " ⡀⡄⡆⡇"
n_rows = 3
window_size = int(sample_rate * 0.05)
start_s = max(0, pos - window_size // 2)
end_s = min(total_frames, start_s + window_size)
@@ -347,24 +350,36 @@ def play_audio(buf, sample_rate, title="", info_lines=None, offset_sec=0.0):
# Log scale — human hearing is logarithmic
bands = [np.log1p(b * 50) for b in bands]
peak = max(bands) if max(bands) > 0 else 1
# Color each bar: low freq green, mid yellow, high red
scope_parts = []
for j, b in enumerate(bands):
idx = min(4, int(b / peak * 4))
frac = j / scope_w
if frac < 0.33:
c = "\033[32m" # green — bass
elif frac < 0.66:
c = "\033[33m" # yellow — mids
else:
c = "\033[31m" # red — highs
scope_parts.append(f"{c}{bars[idx]}")
scope = "".join(scope_parts) + "\033[0m"
else:
scope = "\033[90m" + "─" * scope_w + "\033[0m"
# Multi-row spectrum: map each band to 0..n_rows*4 height
max_h = n_rows * 4
heights = [min(max_h, int(b / peak * max_h)) for b in bands]
# Draw: move up 3 lines, write scope, skip controls line, write progress
sys.stderr.write(f"\033[3A\r {scope} \r\n\n\n\r {icon} {cur_m}:{cur_s:02d} / {tot_m}:{tot_s:02d} {bar} ")
# Build rows top to bottom
rows = []
for row in range(n_rows):
threshold_lo = (n_rows - 1 - row) * 4 # top row = highest threshold
row_parts = []
for j, h in enumerate(heights):
level = max(0, min(4, h - threshold_lo))
frac = j / scope_w
if frac < 0.33:
c = "\033[32m"
elif frac < 0.66:
c = "\033[33m"
else:
c = "\033[31m"
row_parts.append(f"{c}{bars[level]}")
rows.append("".join(row_parts) + "\033[0m")
scope_lines = rows
else:
scope_lines = ["\033[90m" + " " * scope_w + "\033[0m"] * n_rows
# Draw: move up, write scope rows, skip controls, write progress
up = n_rows + 2 # scope rows + blank + controls
sys.stderr.write(f"\033[{up}A\r")
for row in scope_lines:
sys.stderr.write(f" {row} \r\n")
sys.stderr.write(f"\n\n\r {icon} {cur_m}:{cur_s:02d} / {tot_m}:{tot_s:02d} {bar} ")
sys.stderr.flush()
# Non-blocking single char read