Форумчанин vasilius так мне ответил по этим импульсам:
... но это просто дуал моно импульсы
Ну то есть левый канал равен правому... просто моно импульс в формате стерео вав файла.
Это просто для удобности скорее, нежели, чем для какого-то звукового эфекта
Вы можете сами убедится
Загрузите в тон матчер, в оба спектра один и тот же импульс, в одном выберите канал 1, а во втором канал 2
И нажмите Матч.... получите ровную линию...
Так что разница может быть простым плацебо.
А вот что пишет OH
TrueStereo is an OwnHammer original concept, implementation, and market first format. On a technical level,
these are stereo format,
2 channel files, where each side is completely unique but the combined result center pan
resolves when fed with a mono/center panned source (except for “Haas L/R” files, as described below), and does
so without being lopsided and/or introducing the strange and fatiguing phase anomalies that are found in the
common and primitive tactic of blending in frequency and phase imbalanced left/right room mics. Every file in the
TrueStereo segment is pure in its makeup, and only consists of the mic or mic mixes described in the file name
while still retaining unique stereo channels.
The OwnHammer TrueStereo format can help give extra spread and separation for stereo effects, and in a general
sense in a mix of double (or more) tracked guitars with less possibility for a shrinking field when struck notes on
opposing sides of the sound field are very similar in timing, pitch, and amplitude. The TrueStereo format does not
function like a Haas precedence effect, and will not transform a mono source into a faux left/right panned output.