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#!/bin/bash echo "🔍 Elton John - Greatest Hits (DCC Gold - Steve Hoffman) FLAC Validator" echo "================================================================" for f in *.flac; do echo "📀 $f" # Check sample rate & bit depth mediainfo --Inform="General;%SamplingRate%/%BitDepth%" "$f" # Check HDCD flag metaflac --list "$f" | grep -q "HDCD" && echo "✅ HDCD flag present" || echo "⚠️ HDCD flag missing" # Check DR (requires dr14tmeter) dr14tmeter "$f" -d 2>/dev/null | grep "DR" || echo "Run: dr14tmeter '$f'" echo "---" done To make these features truly useful, you need reference data. Known good hashes (CRC32) for the DCC Gold:
import subprocess, os def check_dr(folder_path): for file in os.listdir(folder_path): if file.endswith(".flac"): result = subprocess.run(['bs1770gain', '-a', '-d', os.path.join(folder_path, file)], capture_output=True, text=True) # Parse DR value from output if "DR" in result.stdout: dr = result.stdout.split("DR")[1].split()[0] if int(dr) < 12: print(f"⚠️ Low DR (dr) - Possibly wrong master: file") else: print(f"✅ DRdr - Hoffman-authentic: file") This script checks if your FLAC matches the known DR scores
pre_gap_seconds = pre_gap_samples / sr if 1.8 < pre_gap_seconds < 2.2: print("✅ Authentic pre-gap present (~2 sec analog silence)") else: print(f"⚠️ Suspicious pre-gap: pre_gap_secondss") Save as hoffman_dcc_checker.sh : This script checks if your FLAC matches the known DR scores
Since you want a "useful feature" for this specific FLAC rip, here are several practical tools/scripts/features you can create or apply to enhance playback, tagging, and verification. Why: Hoffman’s master is prized for not being loudness-war compressed. This script checks if your FLAC matches the known DR scores. This script checks if your FLAC matches the known DR scores
import soundfile as sf data, sr = sf.read("01 - Your Song.flac") pre_gap_samples = 0 for i in range(min(44100*5, len(data))): # first 5 seconds if abs(data[i]) < 0.0001: pre_gap_samples += 1 else: break
Scans the FLACs and flags any track with a DR score below 12 (Hoffman’s usually score 12-14).