AlphaSynth output pitch too high for combined bends (bend following a bend)

[WolfgangD]

Happy to provide more details if needed, but here is what we've heard testing latest version on alphaTab.

Expected Results

Pitch output correctly (e.g. compare Guitar Pros output) for combined bends.

Observed Results

Pitch is too high (mostly 2 half tones higher) on a combined bend.

See for annotated errors. +2/2 means 2 half tones too high. +1/2 means 1 half tone too high.

Steps to Reproduce

1. Load Notation_Legend.gp
2. play bending bars UTF8 Strings Not Rendered #3-18

Version

• 1.2 (develop, 72512ce)

Flavor

• [X ] JavaScript

System

• Mac OS Big Sur, Safari

options = {
                file: filename,
                core: {
                    engine: "svg"
                },
                player: {
                    soundFont: "FluidR3GM.sf2",
                    enableCursor: true,
                    enablePlayer: true,
                    enableUserInteraction: false
                },
                notation: {
                    elements: {
                        ScoreTitle: false,
                        ScoreSubTitle: false,
                        ScoreArtist: false,
                        ScoreAlbum: false,
                        ScoreWords: false,
                        ScoreMusic: false,
                        ScoreWordsAndMusic: false,
                        ScoreCopyright: false,
                        GuitarTuning: false,
                        TrackNames: false,
                        EffectMarker: false,
                        EffectTempo: false
                    },
                    notationMode: 'songbook'
                }

[Danielku15]

Thanks for reporting this. I thought I have tested the bends quite extensively and validated the right audio. But I fear the combined scenarios might be buggy. I will need to check if it is caused by the midi generation (which I hope) or if it is a side effect within the synth engine.

[Danielku15]

Found the buggy parts. There were some left-over paths where for individual notes full beat-bends were generated. This resulted in double bends (beat+note).