{"observation":{"id":"56042900-fa97-46a8-a5fe-26caf17045e5","tool":"auphonic","tool_name":"Auphonic","criterion":"voice-preservation","criterion_name":"Voice preservation","criterion_definition":"After cleanup, does the voice still sound natural, or hollow, robotic, underwater, or artifacted?","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"Noise cleanup is only useful if the speech still sounds natural and intelligible after processing. (3 of 3 judges)","scenario":"indoor-ac-fan-background-noise","scenario_name":"Indoor AC + Fan Background Noise","group_tag":"background-noise-removal","scenario_description":"A real-world indoor speech recording with continuous background noise from both an air conditioner and a fan. It is designed to test whether tools can suppress overlapping mechanical noise while preserving speech naturalness.","modality":"audio","input_text":null,"input_artifact_refs":[{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/remove-background-noise-from-audio-and-v-ai-demos-direction-ac-and-fan-on-bf9031354d4a.wav","role":"input","filename":"AI demos direction ac and fan on.wav"}],"stresses":["Removal of multiple overlapping indoor mechanical noises","Speech enhancement and isolation","Voice quality preservation under steady noise","Minimal-artifact background noise suppression"],"verdict":"struggled","score":null,"score_total":null,"note":"The cleaned speech stayed clear and understandable, but the voice sounded more processed, slightly robotic, and louder than the original, reducing naturalness.","evidence_state":"observed","source":null,"artifacts":[{"url":"https://cdn.futuresmart.ai/public/aidemos/fd2f9af51d4448f1bc258b498240f2ba.mp4?v=1","role":"context","alt":null},{"url":"https://cdn.futuresmart.ai/public/aidemos/93055c9a8f514f75b13059d6d45ff6a3.mp4?v=1","role":"context","alt":null}],"run_id":"189e3005-33f2-4481-924e-334542fcda87","study_title":"Remove Background Noise from Audio and Video Recordings Using AI","study_kind":"generation","research_task":"86ba6cyhe","tested_at":null,"completeness":"input-and-output","input":{"state":"files","text":null,"files":[{"url":"https://d3epheqghktydj.cloudfront.net/remove-background-noise-from-audio-and-v-ai-demos-direction-ac-and-fan-on-bf9031354d4a.wav","filename":"AI demos direction ac and fan on.wav","alt":"Indoor AC + Fan Background Noise","role":"input"}],"modality":"audio","stresses":["Removal of multiple overlapping indoor mechanical noises","Speech enhancement and isolation","Voice quality preservation under steady noise","Minimal-artifact background noise suppression"]},"tool_page_slug":"auphonic","tool_url":"https://aidemos.com/tools/auphonic","permalink":"https://aidemos.com/evidence/56042900-fa97-46a8-a5fe-26caf17045e5","api_url":"https://ai.aidemos.com/v1/observations/56042900-fa97-46a8-a5fe-26caf17045e5"},"peers":[{"id":"409cb8c0-c002-4149-8016-730a1f82d01a","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"mixed","score":null,"score_total":null,"note":"Speech stayed clear, but the tool noticeably changed the speaker's tone; the cleaned audio sounded processed and less natural than the original.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/fa51c230f80d4af09534e5ba60a72102.wav?v=1","evidence_url":"https://aidemos.com/evidence/409cb8c0-c002-4149-8016-730a1f82d01a"},{"id":"4caae0ef-63cd-4906-a2e4-e1e31e6880e0","tool":"audo-studio","tool_name":"Audo Studio","verdict":"worked","score":null,"score_total":null,"note":"The cleaned speech remains natural and clear, without introducing robotic artifacts or an artificial-sounding voice.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/f36faa62bada45398766b19520e4390c.mp3?v=1","evidence_url":"https://aidemos.com/evidence/4caae0ef-63cd-4906-a2e4-e1e31e6880e0"},{"id":"cd8cd4a6-be98-4dfd-95c8-401fed48a0fc","tool":"cleanvoice","tool_name":"Cleanvoice","verdict":"struggled","score":null,"score_total":null,"note":"Keeps speech clear and understandable, but noticeably changes the speaker’s tone and character, so the cleaned voice sounds different from the original recording.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/2b0f1814744d47f4892f67eab920bdfe.wav?v=1","evidence_url":"https://aidemos.com/evidence/cd8cd4a6-be98-4dfd-95c8-401fed48a0fc"},{"id":"a9c78f8e-69a5-44b2-aa31-e4b571ce95a0","tool":"elevenlabs-voice-isolator","tool_name":"ElevenLabs Voice Isolator","verdict":"worked","score":null,"score_total":null,"note":"The cleaned audio kept the speaker's original natural tone, clarity, and speaking style, with no significant robotic effects, pitch changes, or speech distortion.","artifact_count":1,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/80cec00644f0451d8bf9dcdda8e5736b.mp3?v=1","evidence_url":"https://aidemos.com/evidence/a9c78f8e-69a5-44b2-aa31-e4b571ce95a0"},{"id":"7a6a7593-7283-41dd-bab5-b85eaedd7a60","tool":"noise-remover","tool_name":"Noise Remover","verdict":"worked","score":null,"score_total":null,"note":"Preserves a natural vocal tone after cleanup, with no noticeable robotic artifacts or pitch distortion in the cleaned segments.","artifact_count":3,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/5265686544a24e6b82ae79aa52c6ae83.wav?v=1","evidence_url":"https://aidemos.com/evidence/7a6a7593-7283-41dd-bab5-b85eaedd7a60"}],"other_criteria":[{"id":"cb473203-cd7b-4268-b315-fc0c92fc54ce","criterion":"handling-different-noise-types","criterion_name":"Handling different noise types","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The tool handled multiple noise classes in one clip, including continuous mechanical noise, hiss, breathing noise, and short microphone disturbances.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/cb473203-cd7b-4268-b315-fc0c92fc54ce"},{"id":"abe8d35f-ced0-429d-a577-c67648124ac1","criterion":"noise-removal-effectiveness","criterion_name":"Noise removal effectiveness","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The tool removed most of the background noise in this recording, including AC noise, fan noise, hiss, breathing sounds, and minor microphone artifacts.","artifact_count":3,"evidence_url":"https://aidemos.com/evidence/abe8d35f-ced0-429d-a577-c67648124ac1"}],"appears_in":[{"page_type":"ranking","slug":"background-noise-removal","title":"Best AI Tools to Remove Background Noise from Audio and Video Recordings","url":"https://aidemos.com/best/background-noise-removal","binding":"run"}],"same_scenario":[{"id":"409cb8c0-c002-4149-8016-730a1f82d01a","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"mixed","score":null,"score_total":null,"note":"Speech stayed clear, but the tool noticeably changed the speaker's tone; the cleaned audio sounded processed and less natural than the original."},{"id":"4caae0ef-63cd-4906-a2e4-e1e31e6880e0","tool":"audo-studio","tool_name":"Audo Studio","verdict":"worked","score":null,"score_total":null,"note":"The cleaned speech remains natural and clear, without introducing robotic artifacts or an artificial-sounding voice."},{"id":"cd8cd4a6-be98-4dfd-95c8-401fed48a0fc","tool":"cleanvoice","tool_name":"Cleanvoice","verdict":"struggled","score":null,"score_total":null,"note":"Keeps speech clear and understandable, but noticeably changes the speaker’s tone and character, so the cleaned voice sounds different from the original recording."},{"id":"a9c78f8e-69a5-44b2-aa31-e4b571ce95a0","tool":"elevenlabs-voice-isolator","tool_name":"ElevenLabs Voice Isolator","verdict":"worked","score":null,"score_total":null,"note":"The cleaned audio kept the speaker's original natural tone, clarity, and speaking style, with no significant robotic effects, pitch changes, or speech distortion."},{"id":"7a6a7593-7283-41dd-bab5-b85eaedd7a60","tool":"noise-remover","tool_name":"Noise Remover","verdict":"worked","score":null,"score_total":null,"note":"Preserves a natural vocal tone after cleanup, with no noticeable robotic artifacts or pitch distortion in the cleaned segments."}]}