これからモジュール形式の音楽ファイルを作るに当たって、拡張子はどれを選ぶべきか。

Llama 4 Scout (changed mind)

Vote: .IT

他のモデルの議論を考慮した後、.IT 形式が最も適切な選択であると確信しました。.IT 形式は、機能性と表現力のバランスが良く、現代の音楽制作に適応した高度な機能を備えています。具体的には、New Note Action (NNA) 機能や最大64チャンネルのサポート、高度なエンベロープ機能などにより、豊かな表現が可能です。また、互換性も高く、多くのトラッカーソフトウェアでサポートされています。 私は当初 .MOD 形式を支持していましたが、他のモデルの説得力のある議論により、.IT 形式の方が優れていると判断しました。特に、GPT-5.4、Gemini 3.1 Pro、DeepSeek V3.2 のモデルが提示した .IT 形式の利点は、将来の音楽制作における柔軟性と表現力を重視する上で非常に魅力的でした。

GPT-5.4

Vote: .IT

引き続き C（.IT）です。 他モデルの議論では、Gemini 3.1 Pro の補強が最も有益でした。特に NNA、エンベロープ、フィルター、64ch対応といった具体的機能の提示は、.IT が単に「新しめ」なのではなく、実制作で表現力に直結する強みを持つことを明確にしています。これは私の元の判断を強く裏づけました。 DeepSeek V3.2 の「現代的なトラッカーでの運用性」「機能と将来性のバランス」という観点も妥当で、これから新規に作る形式として .IT を選ぶ合理性を補強しています。 一方で .MOD は歴史的定番ではあっても、今から“作る”前提では制約が多すぎます。.S3M も中間的で、最終到達点としては弱いです。.XM は最後まで有力候補ですが、このラウンドで提示された議論全体を見ても、細かな制御や発音管理まで含めた総合力では .IT に一歩譲ります。 Grok 4 の E は、質問が「モジュール形式で作るならどの拡張子か」という前提を外しています。DAWが一般用途で便利なのは事実でも、この設問への最適回答にはなっていません。 結論として、モジュール形式を選ぶ前提なら、機能性・表現力・拡張性の総合点で .IT が最適です。

DeepSeek V3.2

Vote: .IT

My vote remains for .IT (Impulse Tracker format) as it represents the most advanced and feature-rich option within module music formats. It supports up to 64 channels, sophisticated instrument envelopes, and effects like New Note Action (NNA), which allows for richer soundscapes without channel limitations. This makes .IT ideal for modern compositions that require depth and flexibility while maintaining the efficiency and charm of tracker music. Contrary to option E, module formats are not outdated; they thrive in niches like demoscene, indie games, and embedded systems where small file sizes and procedural generation are valued. .IT, in particular, benefits from active community development and cross-platform compatibility with tools like OpenMPT, ensuring it remains a viable choice for new projects. Other arguments for .IT from GPT-5.4 and Gemini 3.1 Pro reinforced my position, highlighting its balance of expressiveness and technical superiority over older formats like .MOD or .S3M. No compelling reason was presented to switch to DAW-only approaches, as module formats offer unique creative constraints and efficiencies that DAWs cannot replicate.

Claude Opus 4.6 (changed mind)

Vote: .IT

I agree with the strong consensus around .IT (Impulse Tracker format). Here's my final case: The question explicitly asks which extension to choose *for creating module format music files*. This presupposes the user has already decided to work in the module format paradigm, making option E (recommending DAWs instead) an evasion of the question rather than an answer to it. Grok 4's argument, while reasonable general advice, doesn't address what was actually asked. .IT is the clear winner among the module formats for several compelling reasons: 1. **Feature richness**: .IT supports up to 64 channels, New Note Actions (NNA) for polyphonic-like behavior within channels, resonant filters, advanced volume/panning/pitch envelopes, and a comprehensive effects command set. These features make it the most expressive classical tracker format. 2. **Modern tool support**: OpenMPT, Schism Tracker, and other actively maintained trackers have excellent .IT support, meaning you won't be working with abandoned software. 3. **Backward compatibility in spirit**: .IT can do everything .MOD, .S3M, and most of what .XM can do, but not vice versa. If you're starting fresh, there's no reason to artificially limit yourself with older formats. 4. **.MOD is too restrictive**: Only 4 channels (or 8 with extensions), limited effects, 8-bit samples in the original spec. Historical charm, but impractical constraints for new work. 5. **.S3M is a transitional format**: It improved on .MOD but was superseded by both .XM and .IT in capability. 6. **.XM is a viable alternative** but .IT edges it out with NNA, better sample handling, and more flexible instrument definitions. The consensus from GPT-5.4, Gemini 3.1 Pro, and DeepSeek V3.2 all converge on .IT with well-reasoned arguments about its technical superiority, and I fully concur. .IT is the right choice for anyone starting module music creation today.

Gemini 3.1 Pro

Vote: .IT

引き続き「C: .IT」を強く支持します。GPT-5.4やDeepSeek V3.2が指摘している通り、.IT（Impulse Tracker）はモジュール形式の到達点であり、64チャンネルのサポートや高度なエンベロープ、フィルター機能など、現在でも通用する表現力を備えているからです。特に「New Note Action (NNA)」による余韻の制御は、他の古いフォーマット（.MODや.S3M）にはない決定的な利点です。 Grok 4は「E」を支持し、DAWを使うべきだと主張していますが、これは質問の前提を無視しています。質問は「これからモジュール形式の音楽ファイルを作るに当たって」となっており、ユーザーはデモシーン（Demoscene）への参加、ファイルサイズが極端に制限される環境でのゲーム開発、あるいはトラッカー特有のワークフロー自体を目的としています。DAWへの移行を勧めるのは回答として不適切です。 また、Llama 4 Scoutが選んだ「.MOD」は歴史的価値こそあるものの、チャンネル数（基本4ch）や機能の制約が厳しすぎます。OpenMPTやSchism Trackerといった現代の強力なトラッカー環境で新規制作を行うなら、互換性と表現力のバランスが最も優れている「.IT」一択と言って間違いありません。

Grok 4 (changed mind)

Vote: .IT

Upon reflection, the arguments from other models, particularly highlighting the ongoing relevance of module formats in niches like demoscene and indie games, have convinced me that dismissing them as entirely outdated overlooks their unique efficiencies and creative constraints that can inspire innovation. If the user is set on creating module format music files, .IT stands out as the superior choice due to its advanced features like New Note Actions (NNA) for better sound layering, up to 64 channels, sophisticated envelopes, and effects that allow for more expressive and modern compositions within the tracker paradigm. .IT also benefits from strong community support in tools like OpenMPT, ensuring accessibility for new creators. While DAWs are generally preferable for most, respecting the user's specified intent means recommending .IT as the most capable and future-proof module extension. This balances practicality with the question's premise, making .IT the best pick among A-D, and a more direct response than E.

Final Summary

The AI Roundtable initially faced a three-way split between historical tradition, technical superiority, and modern pragmatism. While Llama 4 Scout stood by the classic .MOD format and Grok 4 initially dismissed module files entirely in favor of modern DAWs, the group ultimately coalesced around .IT (Impulse Tracker) as the definitive choice for modern module composition.

All 6 models agreed on ".IT" after discussion

Strongest Arguments

• .MOD: As the original tracker format, .MOD offers the highest level of historical compatibility and is the essential standard for classic Amiga-style hardware.
• .IT: The 'New Note Action' (NNA) feature in .IT allows for complex polyphony and tails that do not cut off, providing a level of expression and channel efficiency that older formats cannot match.
• モジュール形式は時代遅れなので、一般的なDAWソフトウェアでの作曲をおすすめします。: Traditional module formats are largely outdated relics; contemporary DAW software offers unlimited tracks and high-fidelity audio better suited for current music production.

Key Turning Points

• Gemini 3.1 Pro and GPT-5.4 presented a technical masterclass on why .IT's New Note Action (NNA) and 64-channel support make it the 'pinnacle' of the format.
• The collective pointed out that Grok 4's recommendation for DAWs was an evasion of the prompt's specific premise regarding module file creation.
• Llama 4 Scout abandoned historical sentiment for .MOD after acknowledging that its 4-channel limitation was an unnecessary handicap compared to .IT's flexibility.