From 7c2721d54d1590e629874ec9b854eb66cd0e9189 Mon Sep 17 00:00:00 2001 From: Thomas Harte Date: Tue, 15 May 2018 20:43:13 -0400 Subject: [PATCH] Adjusted number again. But we'll see. --- Machines/AppleII/AppleII.cpp | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Machines/AppleII/AppleII.cpp b/Machines/AppleII/AppleII.cpp index fb0905c24..b5aa63744 100644 --- a/Machines/AppleII/AppleII.cpp +++ b/Machines/AppleII/AppleII.cpp @@ -139,8 +139,10 @@ class ConcreteMachine: // decision to sample it at seven times the CPU clock (plus stretches). speaker_.set_input_rate(static_cast(master_clock / (2.0 * static_cast(audio_divider)))); - // Apply a 10Khz low-pass filter. This was picked by ear. - speaker_.set_high_frequency_cutoff(10000); + // Apply a 6Khz low-pass filter. This was picked by ear and by an attempt to understand the + // Apple II schematic but, well, I don't claim much insight on the latter. This is definitely + // something to review in the future. + speaker_.set_high_frequency_cutoff(6000); // Also, start with randomised memory contents. Memory::Fuzz(ram_, sizeof(ram_));