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play.py: slower spectrum decay (0.4/frame) — peaks hold and fall gently

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kenneth Reitz
2026-04-04 14:31:13 -04:00
parent b81df2bd22
commit a3256ac15d
1 changed files with 3 additions and 3 deletions
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play.py
+3 -3
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@@ -264,7 +264,7 @@ def play_audio(buf, sample_rate, title="", info_lines=None, offset_sec=0.0):
big_seek = int(30 * sample_rate)
state = {"pos": 0, "playing": True, "quit": False, "action": None}
prev_heights = [0] * 76 # peak hold for spectrum
prev_heights = [0.0] * 76 # peak hold for spectrum (float for slow decay)
lock = threading.Lock()
def callback(outdata, frames, time_info, status):
@@ -367,7 +367,7 @@ def play_audio(buf, sample_rate, title="", info_lines=None, offset_sec=0.0):
# Peak hold with decay
heights = []
for j, h in enumerate(raw_heights):
held = max(h, prev_heights[j] - 1) # decay by 1 per frame
held = max(h, prev_heights[j] - 0.4) # slow decay
heights.append(held)
prev_heights[j] = held
@@ -377,7 +377,7 @@ def play_audio(buf, sample_rate, title="", info_lines=None, offset_sec=0.0):
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))
level = int(max(0, min(4, int(h) - threshold_lo)))
frac = j / scope_w
if frac < 0.33:
c = "\033[32m"