Sword Master is an action platformer game for the Nintendo Entertainment System. It is set in a medieval fantasy setting and features sword fighting and parallax scrolling.
The samples in this game are notorious for their low quality. However, it was recently discovered that this is the result of bit-reversal, an error where the bits in each byte of the samples are in reverse order of how they should be. This hack corrects the bit order for all of the samples, restoring them to how they were intended to be.
You will need an IPS patch installer to patch the rom such as
http://www.romhacking.net/utilities/240/.
Database match: Sword Master (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: 8145E4C6520E84EE8BE1BE883CB07F9C4F25350C
File CRC32: 6CCD5C11
ROM SHA-1: 58F3298537D85230CF4228DE76C1B0723BD1F5C4
ROM CRC32: 465E5483