{"observation":{"id":"add3a581-22b6-428d-a54b-e64cee9d30ac","tool":"elevenlabs-voice-isolator","tool_name":"ElevenLabs Voice Isolator","criterion":"noise-removal-effectiveness","criterion_name":"Noise removal effectiveness","criterion_definition":"How much of the unwanted noise is actually removed, and whether the tool handles different noise types or only simple hiss.","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"This is the core job: a tool only ranks well if it actually removes unwanted noise effectively. (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":"mixed","score":null,"score_total":null,"note":"The tool reduced continuous AC and fan noise, but startup hiss and microphone noise around 24–25 seconds stayed noticeable in the output.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://cdn.futuresmart.ai/public/aidemos/80cec00644f0451d8bf9dcdda8e5736b.mp3?v=1","role":"output","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":"elevenlabs-voice-isolator","tool_url":"https://aidemos.com/tools/elevenlabs-voice-isolator","permalink":"https://aidemos.com/evidence/add3a581-22b6-428d-a54b-e64cee9d30ac","api_url":"https://ai.aidemos.com/v1/observations/add3a581-22b6-428d-a54b-e64cee9d30ac"},"peers":[{"id":"cf83c37c-8b0b-49c5-aac7-e56e9e61996a","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"worked","score":null,"score_total":null,"note":"The enhancer removed constant background noise from a mixed mechanical source, including fan noise, AC noise, breathing, and a short unwanted burst around 0:24–0:25, leaving the output significantly cleaner than the source.","artifact_count":3,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/fa51c230f80d4af09534e5ba60a72102.wav?v=1","evidence_url":"https://aidemos.com/evidence/cf83c37c-8b0b-49c5-aac7-e56e9e61996a"},{"id":"91794806-14ac-4a61-ab0a-efc039989543","tool":"audo-studio","tool_name":"Audo 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artifacts.","artifact_count":3,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/fa51c230f80d4af09534e5ba60a72102.wav?v=1","evidence_url":"https://aidemos.com/evidence/abe8d35f-ced0-429d-a577-c67648124ac1"},{"id":"3a05565b-bb04-40a3-bbcd-a618a0e249e5","tool":"cleanvoice","tool_name":"Cleanvoice","verdict":"worked","score":null,"score_total":null,"note":"Removes overlapping continuous mechanical noise very effectively: the cleaned result eliminated the AC, fan, breathing, and nearby microphone noise, with the background described as almost completely gone around 0:24–0:25.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/2b0f1814744d47f4892f67eab920bdfe.wav?v=1","evidence_url":"https://aidemos.com/evidence/3a05565b-bb04-40a3-bbcd-a618a0e249e5"},{"id":"26d95dfc-bf93-4916-aa3c-46b6334459bf","tool":"noise-remover","tool_name":"Noise Remover","verdict":"worked","score":null,"score_total":null,"note":"Removes continuous AC, fan, breathing, and hiss noise effectively, with cleanup audible from the start of the cleaned clip.","artifact_count":3,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/5265686544a24e6b82ae79aa52c6ae83.wav?v=1","evidence_url":"https://aidemos.com/evidence/26d95dfc-bf93-4916-aa3c-46b6334459bf"}],"other_criteria":[{"id":"f6bfe3c6-7165-4e5c-ac75-f7d467649eb9","criterion":"handling-different-noise-types","criterion_name":"Handling different noise types","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"It handled steady AC/fan hum well, but performed worse on short-duration noises, microphone interference, and sudden sound artifacts.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/f6bfe3c6-7165-4e5c-ac75-f7d467649eb9"},{"id":"a9c78f8e-69a5-44b2-aa31-e4b571ce95a0","criterion":"voice-preservation","criterion_name":"Voice preservation","rank_role":"decisive","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,"evidence_url":"https://aidemos.com/evidence/a9c78f8e-69a5-44b2-aa31-e4b571ce95a0"}],"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":"cf83c37c-8b0b-49c5-aac7-e56e9e61996a","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"worked","score":null,"score_total":null,"note":"The enhancer removed constant background noise from a mixed mechanical source, including fan noise, AC noise, breathing, and a short unwanted burst around 0:24–0:25, leaving the output significantly cleaner than the source."},{"id":"91794806-14ac-4a61-ab0a-efc039989543","tool":"audo-studio","tool_name":"Audo 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0:24–0:25."},{"id":"26d95dfc-bf93-4916-aa3c-46b6334459bf","tool":"noise-remover","tool_name":"Noise Remover","verdict":"worked","score":null,"score_total":null,"note":"Removes continuous AC, fan, breathing, and hiss noise effectively, with cleanup audible from the start of the cleaned clip."}]}